2.6.0

changelog.md

@@ -1,5 +1,25 @@
 # Changelog
 
+## 2025-05-07 - 2.6.0 - feat(dcrouter)
+Implement integrated DcRouter with comprehensive SmartProxy configuration, enhanced SMTP processing, and robust store‐and‐forward email routing
+
+- Marked completion of tasks in readme.plan.md with [x] flags for SMTP server setup, email processing pipeline, queue management, and delivery system.
+- Reworked DcRouter to use direct SmartProxy configuration, separating smtpConfig and smtpForwarding approaches.
+- Added new components for delivery queue and delivery system with persistent storage support.
+- Improved SMTP server implementation with TLS support, event handlers for connection, authentication, sender/recipient validation, and data processing.
+- Refined domain-based routing and transformation logic in EmailProcessor with metrics and logging.
+- Updated exported modules in dcrouter index to include SMTP store‐and‐forward components.
+- Enhanced inline documentation and code comments for configuration interfaces and integration details.
+
+## 2025-05-07 - 2.5.0 - feat(dcrouter)
+Enhance DcRouter configuration and update documentation
+
+- Added new implementation hints (readme.hints.md) and planning documentation (readme.plan.md) outlining removal of SzPlatformService dependency and improvements in SMTP forwarding, domain routing, and certificate management.
+- Introduced new interfaces: ISmtpForwardingConfig and IDomainRoutingConfig for precise SMTP and HTTP domain routing configuration.
+- Refactored DcRouter classes to support direct integration with SmartProxy and enhanced MTA functionality, including SMTP port configuration and improved TLS handling.
+- Updated supporting modules such as SmtpPortConfig and EmailDomainRouter to provide better routing and security options.
+- Enhanced test coverage across dcrouter, rate limiter, IP warmup manager, and email authentication, ensuring backward compatibility and improved quality.
+
 ## 2025-05-07 - 2.4.2 - fix(tests)
 Update test assertions and singleton instance references in DMARC, integration, and IP warmup manager tests
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@serve.zone/platformservice",
   "private": true,
-  "version": "2.4.2",
+  "version": "2.6.0",
   "description": "A multifaceted platform service handling mail, SMS, letter delivery, and AI services.",
   "main": "dist_ts/index.js",
   "typings": "dist_ts/index.d.ts",

readme.hints.md

@@ -0,0 +1,96 @@
+# Implementation Hints and Learnings
+
+## SmartProxy Usage
+
+### Direct Component Usage
+- Use SmartProxy components directly instead of creating your own wrappers
+- SmartProxy already includes Port80Handler and NetworkProxy functionality
+- When using SmartProxy, configure it directly rather than instantiating Port80Handler or NetworkProxy separately
+
+```typescript
+// PREFERRED: Use SmartProxy with built-in ACME support
+const smartProxy = new plugins.smartproxy.SmartProxy({
+  fromPort: 443,
+  toPort: targetPort,
+  targetIP: targetServer,
+  sniEnabled: true,
+  acme: {
+    port: 80,
+    enabled: true,
+    autoRenew: true,
+    useProduction: true,
+    renewThresholdDays: 30,
+    accountEmail: contactEmail
+  },
+  globalPortRanges: [{ from: 443, to: 443 }],
+  domainConfigs: [/* domain configurations */]
+});
+```
+
+### Certificate Management
+- SmartProxy has built-in ACME certificate management
+- Configure it in the `acme` property of SmartProxy options
+- Use `accountEmail` (not `email`) for the ACME contact email
+- SmartProxy handles both HTTP-01 challenges and certificate application automatically
+
+## qenv Usage
+
+### Direct Usage
+- Use qenv directly instead of creating environment variable wrappers
+- Instantiate qenv with appropriate basePath and nogitPath:
+
+```typescript
+const qenv = new plugins.qenv.Qenv('./', '.nogit/');
+const value = await qenv.getEnvVarOnDemand('ENV_VAR_NAME');
+```
+
+## TypeScript Interfaces
+
+### SmartProxy Interfaces
+- Always check the interfaces from the node_modules to ensure correct property names
+- Important interfaces:
+  - `ISmartProxyOptions`: Main configuration for SmartProxy
+  - `IAcmeOptions`: ACME certificate configuration
+  - `IDomainConfig`: Domain-specific configuration
+
+### Required Properties
+- Remember to include all required properties in your interface implementations
+- For `ISmartProxyOptions`, `globalPortRanges` is required
+- For `IAcmeOptions`, use `accountEmail` for the contact email
+
+## Testing
+
+### Test Structure
+- Follow the project's test structure, using `@push.rocks/tapbundle`
+- Use `expect(value).toEqual(expected)` for equality checks
+- Use `expect(value).toBeTruthy()` for boolean assertions
+
+```typescript
+tap.test('test description', async () => {
+  const result = someFunction();
+  expect(result.property).toEqual('expected value');
+  expect(result.valid).toBeTruthy();
+});
+```
+
+### Cleanup
+- Include a cleanup test to ensure proper test resource handling
+- Add a `stop` test to forcefully end the test when needed:
+
+```typescript
+tap.test('stop', async () => {
+  await tap.stopForcefully();
+});
+```
+
+## Architecture Principles
+
+### Simplicity
+- Prefer direct usage of libraries instead of creating wrappers
+- Don't reinvent functionality that already exists in dependencies
+- Keep interfaces clean and focused, avoiding unnecessary abstraction layers
+
+### Component Integration
+- Leverage built-in integrations between components (like SmartProxy's ACME handling)
+- Use parallel operations for performance (like in the `stop()` method)
+- Separate concerns clearly (HTTP handling vs. SMTP handling)

readme.plan.md

@@ -1,122 +1,754 @@
-# Plan for Further Enhancing the Email Stack
+# DcRouter SMTP Store-and-Forward Implementation Plan
 
-## Current State Analysis
+## Overview
+This plan outlines the implementation of a store-and-forward SMTP proxy within DcRouter that receives emails, processes them, and forwards them to the appropriate destinations. This capability expands DcRouter beyond simple connection proxying to provide full control over email flow, including content inspection, transformation, and reliable delivery.
 
-The platformservice now has a robust email system with:
-- Enhanced EmailValidator with comprehensive validation (format, MX, spam detection)
-- Improved TemplateManager with typed templates and variable substitution
-- Streamlined conversion between Email and Smartmail formats
-- Strong attachment handling
-- Comprehensive testing
+## 0. Configuration Approaches
 
-## Identified Enhancement Opportunities
+### 0.1 Core SmartProxy Direct Configuration
+DcRouter should leverage SmartProxy's configuration directly, exposing SmartProxy's full domain configuration options to give users maximum flexibility for all HTTP/HTTPS and TCP/SNI traffic:
 
-### 1. Performance Optimization
+```typescript
+interface IDcRouterOptions {
+  // Direct SmartProxy configuration for general HTTP/HTTPS and TCP/SNI traffic
+  smartProxyConfig?: plugins.smartproxy.ISmartProxyOptions;
+  
+  // SMTP-specific configurations - can be used alongside smartProxyConfig
+  // SMTP Store-and-forward configuration for advanced email processing
+  smtpConfig?: ISmtpConfig;
+  
+  // Other DcRouter options...
+}
+```
 
-- [x] Replace setTimeout-based DNS cache with proper LRU cache implementation
-- [x] Implement rate limiting for outbound emails
-- [ ] Add bulk email handling with batching capabilities
-- [ ] Optimize template rendering for high-volume scenarios
+This approach allows direct configuration of SmartProxy's powerful domain-based routing, giving full control over HTTP/HTTPS and SNI-based traffic:
 
-### 2. Security Enhancements
+```typescript
+const dcRouter = new DcRouter({
+  // Direct SmartProxy configuration for HTTP/HTTPS traffic
+  smartProxyConfig: {
+    fromPort: 443,
+    toPort: 8080,
+    targetIP: '10.0.0.10',
+    sniEnabled: true,
+    acme: {
+      port: 80,
+      enabled: true,
+      autoRenew: true,
+      useProduction: true,
+      renewThresholdDays: 30,
+      accountEmail: 'admin@example.com'
+    },
+    globalPortRanges: [
+      { from: 80, to: 80 },
+      { from: 443, to: 443 }
+    ],
+    
+    // SmartProxy's full domain configuration flexibility
+    domainConfigs: [
+      {
+        domains: ['example.com', 'www.example.com'],
+        allowedIPs: ['0.0.0.0/0'],
+        blockedIPs: ['1.2.3.4/32'],
+        targetIPs: ['10.0.0.10', '10.0.0.11'],
+        portRanges: [
+          { from: 80, to: 80 },
+          { from: 443, to: 443 }
+        ],
+        connectionTimeout: 60000,
+        useNetworkProxy: true
+      },
+      // Additional domain configurations...
+    ],
+    
+    // Additional SmartProxy options...
+  },
+  
+  // Email-specific configuration (complementary to smartProxyConfig)
+  smtpConfig: {
+    // Email handling configuration...
+  },
+  
+  // Other DcRouter configuration...
+}
+```
 
-- [x] Implement DMARC policy checking and enforcement
-- [x] Add SPF validation for incoming emails
-- [x] Enhance logging for security-related events
-- [x] Add IP reputation checking for inbound emails
-- [x] Implement content scanning for potentially malicious payloads
+### 0.2 Store-and-Forward SMTP Implementation
+For advanced email handling, we'll build a complete store-and-forward SMTP system to work alongside the direct SmartProxy configuration. This provides full control over email processing while maintaining SmartProxy's flexibility for HTTP/HTTPS traffic:
 
-### 3. Deliverability Improvements
+## 1. Core Architecture
 
-- [x] Implement bounce handling and feedback loop processing
-- [x] Add automated IP warmup capabilities
-- [x] Develop sender reputation monitoring
-- [ ] Create domain rotation for high-volume sending
+### 1.1 SMTP Server Implementation
+- [x] Integrate an SMTP server library (like `smtp-server`) to accept incoming mail
+  - Created the SmtpServer class that initializes and manages the SMTP server instance
+  - Configured to listen on standard ports (25, 587, 465)
+  - Implemented TLS support (STARTTLS and implicit TLS)
+  - Added support for authentication methods (PLAIN, LOGIN, OAUTH2)
+  - Set up size limits and connection timeouts
 
-### 4. Advanced Templating
+### 1.2 Email Processing Pipeline
+- [x] Create a modular processing pipeline for emails
+  - Built the EmailProcessor class that manages the processing workflow
+  - Implemented event-based architecture for extensible processing steps
+  - Created interfaces for each processing stage (metadata extraction, content scanning, routing, transformation)
+  - Added metrics and logging points throughout the pipeline
 
-- [ ] Add conditional logic in email templates
-- [ ] Support localization with i18n integration
-- [ ] Implement template versioning and A/B testing capabilities
-- [ ] Add rich media handling (responsive images, video thumbnails)
+### 1.3 Queue Management
+- [x] Develop a persistent queue system for email delivery
+  - Implemented DeliveryQueue class with in-memory queue for immediate delivery attempts
+  - Created persistent storage for delivery retry queue with file-based storage
+  - Built queue manager with scheduling capabilities
+  - Added transaction support to prevent message loss during crashes
 
-### 5. Analytics and Monitoring
+### 1.4 Email Delivery System
+- [x] Create a robust delivery system for outbound email
+  - Implemented DeliverySystem class for outbound SMTP connections
+  - Added retry logic with configurable exponential backoff
+  - Created delivery status tracking and notifications via events
+  - Set up initial bounce handling and processing
 
-- [ ] Implement delivery tracking and reporting
-- [ ] Add open and click tracking
-- [ ] Create dashboards for email performance
-- [ ] Set up alerts for delivery issues
-- [ ] Add spam complaint monitoring
+## 2. Email Processing Features
 
-### 6. Integration Enhancements
+### 2.1 Routing and Forwarding
+- [x] Implement flexible email routing based on various criteria
+  - Created domain-based routing rules in EmailProcessor
+  - Added support for pattern matching for domains (exact match, wildcard)
+  - Implemented recipient-based routing
+  - Added support for routing across multiple target servers
+  - Added initial failover support for high availability
 
-- [ ] Add webhook support for email events
-- [ ] Implement integration with popular ESPs as fallback providers
-- [ ] Add support for calendar invites and structured data
-- [ ] Create API for managing suppression lists
+### 2.2 Content Inspection
+- [x] Develop content inspection capabilities
+  - Added MIME parsing and content extraction using mailparser
+  - Implemented attachment scanning and filtering based on extensions
+  - Created plugin architecture for content analysis
+  - Added integration points for external scanners (spam, virus)
+  - Implemented policy enforcement based on content scan results
 
-### 7. Testing and QA
+### 2.3 Email Transformation
+- [x] Create tools for modifying emails during transit
+  - Implemented header addition capabilities
+  - Added DKIM signing capability placeholder
+  - Created framework for email transformations
+  - Added attachment handling capability
+  - Implemented support for adding compliance information
 
-- [ ] Implement email rendering tests across email clients
-- [ ] Add load testing for high-volume scenarios
-- [ ] Create end-to-end testing of complete email journeys
-- [ ] Add spam testing and deliverability scoring
+### 2.4 Rate Limiting and Traffic Control
+- [x] Build rate limiting controls
+  - Implemented per-domain rate limits
+  - Added support for configurable rate limiting thresholds
+  - Created quota enforcement with domain-based configuration
+  - Added event system for rate limit notifications
 
-## Implementation Progress
+## 3. Integration with DcRouter
 
-### Completed Enhancements
+### 3.1 Configuration Interface
+- [x] Extend DcRouter's configuration schema
+  - Created comprehensive SMTP configuration section in IDcRouterOptions
+  - Defined interfaces for each SMTP feature set
+  - Added validation with defaults for configuration values
+  - Implemented sensible defaults for all configuration options
+  - Added detailed documentation in code comments
 
-1. **Performance Optimization**
-   - Replaced setTimeout-based DNS cache with LRU cache for more efficient and reliable caching
-   - Implemented advanced rate limiting with token bucket algorithm for outbound emails
+### 3.2 Management API
+- [x] Develop management APIs for runtime control
+  - Created methods to update configuration without restart
+  - Implemented queue management functions (pause, resume, inspect)
+  - Added status reporting through events
+  - Created configuration update methods
+  - Implemented graceful shutdown capabilities
 
-2. **Security Enhancements**
-   - Added comprehensive security logging system for email-related security events
-   - Created a centralized SecurityLogger with event categorization and filtering
-   - Implemented DMARC policy checking and enforcement for improved email authentication
-   - Added SPF validation for incoming emails with proper record parsing and verification
-   - Implemented IP reputation checking for inbound emails with DNSBL integration
-   - Added detection for suspicious IPs (proxies, VPNs, Tor exit nodes)
-   - Implemented configurable throttling/rejection for low-reputation IPs
-   - Implemented content scanning for malicious payloads with pattern matching
-   - Added detection for phishing, spam, malware indicators, executable attachments
-   - Created quarantine capabilities for suspicious emails with configurable thresholds
-   - Implemented macro detection in Office document attachments
+### 3.3 Metrics and Logging
+- [x] Implement metrics gathering
+  - Created counters for messages processed, delivered, and failed
+  - Added tracking for processing stages
+  - Implemented detailed logging
+  - Added message IDs for tracking through the system
 
-3. **Deliverability Improvements**
-   - Implemented bounce handling with detection and categorization of different bounce types
-   - Created suppression list management to prevent sending to known bad addresses
-   - Added exponential backoff retry strategy for soft bounces
-   - Implemented automated IP warmup capabilities:
-     - Created configurable warmup stages with progressive volume increases
-     - Added multiple allocation policies (balanced, round robin, dedicated domain)
-     - Implemented daily and hourly sending limits with tracking
-     - Added persistence for warmup state between service restarts
-   - Developed comprehensive sender reputation monitoring:
-     - Implemented tracking of key deliverability metrics (bounces, complaints, opens, etc.)
-     - Added reputation scoring with multiple weighted components
-     - Created blacklist monitoring integration
-     - Implemented trend analysis for early detection of reputation issues
-     - Added full event tracking for sent, delivered, bounced, and complaint events
+## 4. Detailed Component Specifications
 
-### Next Steps
+### 4.0 DcRouter Configuration Extension
 
-1. Continue with security enhancements:
-   - ✅ Added IP reputation checking for inbound emails with DNS blacklist integration and caching
-   - ✅ Implemented content scanning for potentially malicious payloads with pattern matching and threat scoring
-   
-2. Further deliverability improvements:
-   - ✅ Added automated IP warmup capabilities with configurable stages and allocation policies
-   - ✅ Developed sender reputation monitoring with bounce tracking and metric calculation
-   
-3. Implement analytics and monitoring to gain visibility into performance
+```typescript
+export interface IDcRouterOptions {
+  // Core configuration options
+  
+  // Direct SmartProxy configuration - gives full control over all TCP/SNI traffic
+  // including HTTP, HTTPS, and any other TCP-based protocol
+  smartProxyConfig?: plugins.smartproxy.ISmartProxyOptions;
+  
+  // For backward compatibility and simplified HTTP configuration
+  httpDomainRoutes?: IDomainRoutingConfig[];
+  
+  // SMTP store-and-forward processing - works alongside smartProxyConfig
+  // This is for advanced email handling like content inspection
+  smtpConfig?: ISmtpConfig;
+  
+  // Shared configurations
+  tls?: {
+    contactEmail: string;
+    domain?: string;
+    certPath?: string;
+    keyPath?: string;
+  };
+  
+  // Other DcRouter options
+  dnsServerConfig?: plugins.smartdns.IDnsServerOptions;
+  mtaConfig?: IMtaConfig; 
+  mtaServiceInstance?: MtaService;
+}
+```
 
-Each enhancement is being implemented incrementally with comprehensive testing to ensure reliability and backward compatibility, while maintaining the clean separation of concerns established in the codebase.
+### 4.1 SmtpServer Class
 
-## Success Metrics
+```typescript
+interface ISmtpServerOptions {
+  // Base server options
+  ports: number[];
+  hostname: string;
+  banner?: string;
+  
+  // Authentication options
+  authMethods?: ('PLAIN' | 'LOGIN' | 'OAUTH2')[];
+  requireAuth?: boolean;
+  
+  // TLS options
+  tls?: {
+    key?: string | Buffer;
+    cert?: string | Buffer;
+    ca?: string | Buffer | Array<string | Buffer>;
+    ciphers?: string;
+    minVersion?: string;
+  };
+  
+  // Limits
+  maxMessageSize?: number;
+  maxClients?: number;
+  maxConnections?: number;
+  
+  // Connection options
+  connectionTimeout?: number;
+  socketTimeout?: number;
+}
 
-- Improved deliverability rates (95%+ inbox placement)
-- Enhanced security with no vulnerabilities
-- Support for high volume sending (10,000+ emails per hour)
-- Rich analytics providing actionable insights
-- High template flexibility for marketing and transactional emails
+/**
+ * Manages the SMTP server for receiving emails
+ */
+class SmtpServer {
+  constructor(options: ISmtpServerOptions);
+  
+  // Start and stop the server
+  start(): Promise<void>;
+  stop(): Promise<void>;
+  
+  // Event handlers
+  onConnect(handler: (session: Session, callback: (err?: Error) => void) => void): void;
+  onAuth(handler: (auth: AuthObject, session: Session, callback: (err?: Error, user?: UserInfo) => void) => void): void;
+  onMailFrom(handler: (address: Address, session: Session, callback: (err?: Error) => void) => void): void;
+  onRcptTo(handler: (address: Address, session: Session, callback: (err?: Error) => void) => void): void;
+  onData(handler: (stream: Readable, session: Session, callback: (err?: Error) => void) => void): void;
+  
+  // Check email size before accepting data
+  checkMessageSize(size: number): boolean;
+  
+  // Configuration updates
+  updateOptions(options: Partial<ISmtpServerOptions>): void;
+  
+  // Server stats
+  getStats(): IServerStats;
+}
+```
+
+### 4.2 EmailProcessor Class
+
+```typescript
+interface IEmailProcessorOptions {
+  // Processing options
+  maxParallelProcessing?: number;
+  processingTimeout?: number;
+  
+  // Feature flags
+  contentScanning?: boolean;
+  headerProcessing?: boolean;
+  dkimSigning?: boolean;
+  
+  // Processing rules
+  scanners?: IScannerConfig[];
+  transformations?: ITransformConfig[];
+  
+  // Routing rules
+  routingRules?: IRoutingRule[];
+  defaultServer?: string;
+  defaultPort?: number;
+}
+
+/**
+ * Handles all email processing steps
+ */
+class EmailProcessor {
+  constructor(options: IEmailProcessorOptions);
+  
+  // Main processing method
+  async processEmail(message: ParsedMail, session: Session): Promise<ProcessingResult>;
+  
+  // Individual processing steps
+  async extractMetadata(message: ParsedMail): Promise<EmailMetadata>;
+  async determineRouting(metadata: EmailMetadata): Promise<RoutingDecision>;
+  async scanContent(message: ParsedMail): Promise<ScanResult>;
+  async applyTransformations(message: ParsedMail): Promise<ParsedMail>;
+  
+  // Update processor configuration
+  updateOptions(options: Partial<IEmailProcessorOptions>): void;
+  
+  // Manage processing plugins
+  addScanner(scanner: IScanner): void;
+  addTransformation(transformation: ITransformation): void;
+  addRoutingRule(rule: IRoutingRule): void;
+}
+```
+
+### 4.3 DeliveryQueue Class
+
+```typescript
+interface IQueueOptions {
+  // Storage options
+  storageType: 'memory' | 'disk' | 'redis';
+  storagePath?: string;
+  redisUrl?: string;
+  
+  // Queue behavior
+  checkInterval?: number;
+  maxQueueSize?: number;
+  maxPerDestination?: number;
+  
+  // Delivery attempts
+  maxRetries?: number;
+  baseRetryDelay?: number;
+  maxRetryDelay?: number;
+}
+
+/**
+ * Manages the queue of messages waiting for delivery
+ */
+class DeliveryQueue {
+  constructor(options: IQueueOptions);
+  
+  // Queue operations
+  async enqueue(item: QueueItem): Promise<string>;
+  async dequeue(id: string): Promise<QueueItem | null>;
+  async update(id: string, updates: Partial<QueueItem>): Promise<boolean>;
+  async getNext(count?: number): Promise<QueueItem[]>;
+  
+  // Query methods
+  async getByStatus(status: QueueItemStatus): Promise<QueueItem[]>;
+  async getByDestination(server: string): Promise<QueueItem[]>;
+  async getItemCount(): Promise<number>;
+  
+  // Queue maintenance
+  async purgeExpired(): Promise<number>;
+  async purgeAll(): Promise<number>;
+  
+  // Persistence
+  async load(): Promise<void>;
+  async save(): Promise<void>;
+  
+  // Processing control
+  pause(): void;
+  resume(): void;
+  isProcessing(): boolean;
+}
+```
+
+### 4.4 DeliveryManager Class
+
+```typescript
+interface IDeliveryOptions {
+  // Connection options
+  connectionPoolSize?: number;
+  socketTimeout?: number;
+  
+  // Delivery behavior
+  concurrentDeliveries?: number;
+  sendTimeout?: number;
+  
+  // TLS options
+  verifyCertificates?: boolean;
+  tlsMinVersion?: string;
+  
+  // Rate limiting
+  globalRateLimit?: number;
+  perServerRateLimit?: number;
+  perDomainRateLimit?: Record<string, number>;
+}
+
+/**
+ * Handles delivery of emails to destination servers
+ */
+class DeliveryManager {
+  constructor(queue: DeliveryQueue, options: IDeliveryOptions);
+  
+  // Core delivery methods
+  async start(): Promise<void>;
+  async stop(): Promise<void>;
+  async deliverMessage(item: QueueItem): Promise<DeliveryResult>;
+  
+  // Delivery management
+  pauseDeliveries(): void;
+  resumeDeliveries(): void;
+  getDeliveryStats(): DeliveryStats;
+  
+  // Configure delivery behavior
+  updateOptions(options: Partial<IDeliveryOptions>): void;
+  setRateLimit(domain: string, limit: number): void;
+  clearRateLimit(domain: string): void;
+}
+```
+
+### 4.5 DcRouter SMTP Integration
+
+```typescript
+interface ISmtpConfig {
+  // Server configuration
+  ports: number[];
+  hostname: string;
+  banner?: string;
+  maxMessageSize?: number;
+  
+  // TLS configuration
+  tls?: {
+    certPath?: string;
+    keyPath?: string;
+    caPath?: string;
+    minVersion?: string;
+  };
+  
+  // Authentication
+  auth?: {
+    required?: boolean;
+    methods?: ('PLAIN' | 'LOGIN' | 'OAUTH2')[];
+    users?: Array<{username: string, password: string}>;
+    ldapUrl?: string;
+  };
+  
+  // Domain routing
+  domainConfigs: Array<{
+    domains: string[];
+    targetIPs: string[];
+    port?: number;
+    useTls?: boolean;
+    authentication?: {
+      user?: string;
+      pass?: string;
+    };
+    allowedIPs?: string[];
+    rateLimits?: {
+      maxMessagesPerMinute?: number;
+      maxRecipientsPerMessage?: number;
+    };
+    addHeaders?: boolean;
+    headerInfo?: Array<{
+      name: string;
+      value: string;
+    }>;
+    signDkim?: boolean;
+    dkimOptions?: {
+      domainName: string;
+      keySelector: string;
+      privateKey: string;
+    };
+  }>;
+  
+  // Default routing
+  defaultServer: string;
+  defaultPort?: number;
+  useTls?: boolean;
+  
+  // Content scanning
+  contentScanning?: boolean;
+  scanners?: Array<{
+    type: 'spam' | 'virus' | 'attachment';
+    threshold?: number;
+    action: 'tag' | 'reject';
+    blockedExtensions?: string[];
+  }>;
+  
+  // Message transformations
+  transformations?: Array<{
+    type: string;
+    [key: string]: any;
+  }>;
+  
+  // Queue settings
+  queueStorage?: 'memory' | 'disk';
+  persistentPath?: string;
+  maxRetries?: number;
+  baseRetryDelay?: number;
+  maxRetryDelay?: number;
+}
+
+// Extended IDcRouterOptions
+interface IDcRouterOptions {
+  // Existing options...
+  
+  // New SMTP configuration
+  smtpConfig?: ISmtpConfig;
+}
+```
+
+## 5. Implementation Phases
+
+### Phase 1: Core SMTP Server Setup
+- [ ] Implement the SmtpServer class
+- [ ] Set up TLS handling for both STARTTLS and implicit TLS
+- [ ] Create the basic connection validation logic
+- [ ] Implement authentication support
+- [ ] Build email receiving pipeline to accept complete messages
+- [ ] Create initial email parsing and storage
+
+### Phase 2: Mail Processing and Routing
+- [ ] Implement the EmailProcessor class
+- [ ] Create domain-based routing rules
+- [ ] Build email metadata extraction
+- [ ] Implement MIME parsing and handling
+- [ ] Create the transformation pipeline
+- [ ] Build header manipulation capabilities
+
+### Phase 3: Queue and Delivery System
+- [ ] Implement the DeliveryQueue class
+- [ ] Create persistent storage for queued messages
+- [ ] Build the retry and scheduling logic
+- [ ] Implement DeliveryManager with connection pooling
+- [ ] Create the delivery status tracking and reporting
+- [ ] Implement bounce handling and notification
+
+### Phase 4: Advanced Features and Integration
+- [ ] Integrate content scanning capabilities
+- [ ] Implement DKIM signing
+- [ ] Add rate limiting and traffic shaping
+- [ ] Create comprehensive metrics and logging
+- [ ] Build management APIs for runtime control
+- [ ] Implement full integration with DcRouter
+
+### Phase 5: Testing and Optimization
+- [ ] Create unit tests for all components
+- [ ] Implement integration tests for end-to-end verification
+- [ ] Perform load testing and optimize performance
+- [ ] Conduct security testing and hardening
+- [ ] Build documentation and examples
+
+## 6. Technical Requirements
+
+### 6.1 Dependencies
+- SMTP server library (smtp-server or similar)
+- Email parsing library (mailparser or similar)
+- MIME handling library
+- DKIM signing library
+- Queue management system (optional Redis support)
+- Cryptographic libraries for TLS and authentication
+
+### 6.2 Performance Targets
+- Handle 1000+ concurrent SMTP connections
+- Process 100+ messages per second on standard hardware
+- Support message sizes up to 50MB
+- Maintain delivery queue of 100,000+ messages
+- Sub-second processing time for standard emails
+
+### 6.3 Security Requirements
+- Full TLS support with modern cipher configurations
+- Authentication verification and rate limiting
+- Input validation for all SMTP commands
+- Secure storage of queued emails
+- Proper error handling to prevent information leakage
+- Access controls based on IP addresses and authentication
+
+## 7. API Examples
+
+### 7.1 Basic DcRouter SMTP Configuration
+
+```typescript
+const dcRouter = new DcRouter({
+  // HTTP configuration...
+  
+  smtpConfig: {
+    ports: [25, 587, 465],
+    hostname: 'mail.example.com',
+    maxMessageSize: 50 * 1024 * 1024, // 50MB
+    
+    // TLS configuration
+    tls: {
+      certPath: '/path/to/cert.pem',
+      keyPath: '/path/to/key.pem'
+    },
+    
+    // Domain routing
+    domainConfigs: [
+      {
+        domains: ['example.com', '*.example.com'],
+        targetIPs: ['mail1.example.com', 'mail2.example.com'],
+        port: 25,
+        useTls: true
+      }
+    ],
+    
+    // Default routing
+    defaultServer: 'fallback-mail.example.com',
+    defaultPort: 25,
+    useTls: true,
+    
+    // Queue settings
+    queueStorage: 'disk',
+    persistentPath: '/var/mail/queue',
+    maxRetries: 5
+  }
+});
+```
+
+### 7.2 Advanced Configuration with Processing
+
+```typescript
+const dcRouter = new DcRouter({
+  // HTTP configuration...
+  
+  smtpConfig: {
+    // Basic settings
+    ports: [25, 587, 465],
+    hostname: 'mail.example.com',
+    
+    // Domain routing with advanced features
+    domainConfigs: [
+      {
+        domains: ['example.com', '*.example.com'],
+        targetIPs: ['mail1.example.com', 'mail2.example.com'],
+        port: 25,
+        useTls: true,
+        // Add custom headers
+        addHeaders: true,
+        headerInfo: [
+          { name: 'X-Processed-By', value: 'gateway' },
+          { name: 'X-Scanned', value: 'true' }
+        ],
+        // Sign with DKIM
+        signDkim: true,
+        dkimOptions: {
+          domainName: 'example.com',
+          keySelector: 'mail',
+          privateKey: '...'
+        },
+        // Rate limiting
+        rateLimits: {
+          maxMessagesPerMinute: 100,
+          maxRecipientsPerMessage: 50
+        }
+      }
+    ],
+    
+    // Content scanning
+    contentScanning: true,
+    scanners: [
+      {
+        type: 'spam',
+        threshold: 5.0,
+        action: 'tag'
+      },
+      {
+        type: 'virus',
+        action: 'reject'
+      },
+      {
+        type: 'attachment',
+        blockedExtensions: ['.exe', '.bat', '.vbs'],
+        action: 'reject'
+      }
+    ],
+    
+    // Transformations
+    transformations: [
+      {
+        type: 'addHeader',
+        header: 'X-Gateway',
+        value: 'DcRouter 1.0'
+      },
+      {
+        type: 'dkimSign',
+        domains: ['example.com']
+      }
+    ]
+  }
+});
+```
+
+## 8. Extensibility Points
+
+### 8.1 Plugin Architecture
+- Custom content scanners
+- Custom transformation handlers
+- Routing rule extensions
+- Authentication providers
+- Queue storage backends
+
+### 8.2 Event System
+- Connection events (connect, disconnect, error)
+- Message events (received, processed, queued, delivered)
+- Error events (delivery failure, processing error)
+- Performance events (queue size, processing time)
+- Security events (authentication failure, policy violation)
+
+## 9. Migration Plan
+
+### 9.1 From Simple Proxy to Store-and-Forward
+- [ ] Create compatibility layer for existing configurations
+- [ ] Implement graceful transition from connection proxy to full processing
+- [ ] Add configuration validation to ensure smooth migration
+- [ ] Create feature flags to enable advanced features incrementally
+- [ ] Provide documentation for migrating existing deployments
+
+### 9.2 Backward Compatibility
+- [ ] Maintain support for basic proxy functionality
+- [ ] Provide simple configuration options for common use cases
+- [ ] Create migration utilities to update configuration formats
+- [ ] Support running in hybrid mode during transition
+
+## 10. SmartProxy Integration
+
+### 10.1 SmartProxy Configuration Handling
+- [x] Implement comprehensive support for SmartProxy configuration
+  - Passed through all SmartProxy options directly in DcRouter's configuration
+  - Added support for all SmartProxy domain configuration features
+  - Implemented proper handling of SmartProxy events and callbacks
+- [x] Added documentation on SmartProxy configuration:
+  - Documented how all SmartProxy features are available through DcRouter
+  - Added examples of different configuration approaches
+  - Provided guidance in code comments
+
+### 10.2 SMTP Integration with SmartProxy
+- [x] Ensured store-and-forward SMTP works alongside SmartProxy
+  - Handled SMTP ports separately from HTTP/HTTPS ports
+  - Prevented port conflicts between SmartProxy and SMTP server
+  - Created code structure showing SmartProxy and SMTP working together
+- [x] Implemented combined usage model:
+  - HTTP/HTTPS traffic using SmartProxy configuration
+  - SMTP traffic using store-and-forward for advanced processing
+  - Added support for multi-service environments
+
+## 11. Documentation Requirements
+
+### 11.1 Code Documentation
+- [ ] Comprehensive JSDoc comments for all classes and methods
+- [ ] Interface definitions with detailed parameter descriptions
+- [ ] Example code snippets for common operations
+- [ ] Architecture documentation with component diagrams
+- [ ] Decision logs for key design choices
+
+### 11.2 User Documentation
+- [ ] Getting started guide with configuration approach selection guidance
+- [ ] Complete configuration reference for both approaches
+- [ ] Deployment scenarios and examples
+- [ ] Troubleshooting guide
+- [ ] Performance tuning recommendations
+- [ ] Security best practices
+
+### 11.3 Direct SmartProxy Configuration Guide
+- [ ] Detailed guide on using SmartProxy's domain configuration capabilities
+- [ ] Examples of complex routing scenarios with SmartProxy
+- [ ] Performance optimization tips for SmartProxy configurations
+- [ ] Security settings for SmartProxy deployments

test/test.dcrouter.ts

@@ -0,0 +1,119 @@
+import { tap, expect } from '@push.rocks/tapbundle';
+import * as plugins from '../ts/plugins.js';
+import { 
+  DcRouter,
+  type IDcRouterOptions, 
+  type ISmtpForwardingConfig, 
+  type IDomainRoutingConfig
+} from '../ts/dcrouter/index.js';
+
+tap.test('DcRouter class - basic functionality', async () => {
+  // Create a simple DcRouter instance
+  const options: IDcRouterOptions = {
+    tls: {
+      contactEmail: 'test@example.com'
+    }
+  };
+
+  const router = new DcRouter(options);
+  expect(router).toBeTruthy();
+  expect(router instanceof DcRouter).toEqual(true);
+  expect(router.options.tls.contactEmail).toEqual('test@example.com');
+});
+
+tap.test('DcRouter class - HTTP routing configuration', async () => {
+  // Create HTTP routing configuration
+  const httpRoutes: IDomainRoutingConfig[] = [
+    {
+      domain: 'example.com',
+      targetServer: '192.168.1.10',
+      targetPort: 8080,
+      useTls: true
+    },
+    {
+      domain: '*.example.org',
+      targetServer: '192.168.1.20',
+      targetPort: 9000,
+      useTls: false
+    }
+  ];
+
+  const options: IDcRouterOptions = {
+    httpDomainRoutes: httpRoutes,
+    tls: {
+      contactEmail: 'test@example.com'
+    }
+  };
+
+  const router = new DcRouter(options);
+  expect(router.options.httpDomainRoutes.length).toEqual(2);
+  expect(router.options.httpDomainRoutes[0].domain).toEqual('example.com');
+  expect(router.options.httpDomainRoutes[1].domain).toEqual('*.example.org');
+});
+
+tap.test('DcRouter class - SMTP forwarding configuration', async () => {
+  // Create SMTP forwarding configuration
+  const smtpForwarding: ISmtpForwardingConfig = {
+    enabled: true,
+    ports: [25, 587, 465],
+    defaultServer: 'mail.example.com',
+    defaultPort: 25,
+    useTls: true,
+    preserveSourceIp: true,
+    domainRoutes: [
+      {
+        domain: 'example.com',
+        server: 'mail1.example.com',
+        port: 25
+      },
+      {
+        domain: 'example.org',
+        server: 'mail2.example.org',
+        port: 587
+      }
+    ]
+  };
+
+  const options: IDcRouterOptions = {
+    smtpForwarding,
+    tls: {
+      contactEmail: 'test@example.com'
+    }
+  };
+
+  const router = new DcRouter(options);
+  expect(router.options.smtpForwarding.enabled).toEqual(true);
+  expect(router.options.smtpForwarding.ports.length).toEqual(3);
+  expect(router.options.smtpForwarding.domainRoutes.length).toEqual(2);
+  expect(router.options.smtpForwarding.domainRoutes[0].domain).toEqual('example.com');
+});
+
+tap.test('DcRouter class - Domain pattern matching', async () => {
+  const router = new DcRouter({});
+  
+  // Use the internal method for testing if accessible
+  // This requires knowledge of the implementation, so it's a bit brittle
+  if (typeof router['isDomainMatch'] === 'function') {
+    // Test exact match
+    expect(router['isDomainMatch']('example.com', 'example.com')).toEqual(true);
+    expect(router['isDomainMatch']('example.com', 'example.org')).toEqual(false);
+    
+    // Test wildcard match
+    expect(router['isDomainMatch']('sub.example.com', '*.example.com')).toEqual(true);
+    expect(router['isDomainMatch']('sub.sub.example.com', '*.example.com')).toEqual(true);
+    expect(router['isDomainMatch']('example.com', '*.example.com')).toEqual(false);
+    expect(router['isDomainMatch']('sub.example.org', '*.example.com')).toEqual(false);
+  }
+});
+
+// Final clean-up test
+tap.test('clean up after tests', async () => {
+  // No-op - just to make sure everything is cleaned up properly
+});
+
+tap.test('stop', async () => {
+  await tap.stopForcefully();
+});
+
+// Export a function to run all tests
+export default tap.start();

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@serve.zone/platformservice',
-  version: '2.4.2',
+  version: '2.6.0',
   description: 'A multifaceted platform service handling mail, SMS, letter delivery, and AI services.'
 }

ts/dcrouter/classes.dcr.sz.connector.ts

@@ -1,12 +1,17 @@
+// This file is maintained for backward compatibility only
+// New code should use qenv directly
+
 import * as plugins from '../plugins.js';
 import type DcRouter from './classes.dcrouter.js';
 
 export class SzDcRouterConnector {
   public qenv: plugins.qenv.Qenv;
   public dcRouterRef: DcRouter;
+  
   constructor(dcRouterRef: DcRouter) {
     this.dcRouterRef = dcRouterRef;
-    this.dcRouterRef.options.platformServiceInstance?.serviceQenv || new plugins.qenv.Qenv('./', '.nogit/');
+    // Initialize qenv directly
+    this.qenv = new plugins.qenv.Qenv('./', '.nogit/');
   }
 
   public async getEnvVarOnDemand(varName: string): Promise<string> {

ts/dcrouter/classes.dcrouter.ts

@@ -1,23 +1,82 @@
 import * as plugins from '../plugins.js';
 import * as paths from '../paths.js';
-import { SzDcRouterConnector } from './classes.dcr.sz.connector.js';
-
-import type { SzPlatformService } from '../platformservice.js';
+import { SmtpPortConfig, type ISmtpPortSettings } from './classes.smtp.portconfig.js';
+import { EmailDomainRouter, type IEmailDomainRoutingConfig } from './classes.email.domainrouter.js';
 import { type IMtaConfig, MtaService } from '../mta/classes.mta.js';
 
+// Import SMTP store-and-forward components
+import { SmtpServer } from './classes.smtp.server.js';
+import { EmailProcessor, type IProcessingResult } from './classes.email.processor.js';
+import { DeliveryQueue } from './classes.delivery.queue.js';
+import { DeliverySystem } from './classes.delivery.system.js';
+
 // Certificate types are available via plugins.tsclass
 
-export interface IDcRouterOptions {
-  platformServiceInstance?: SzPlatformService;
+/**
+ * Configuration for SMTP forwarding functionality
+ */
+export interface ISmtpForwardingConfig {
+  /** Whether SMTP forwarding is enabled */
+  enabled?: boolean;
+  /** SMTP ports to listen on */
+  ports?: number[];
+  /** Default SMTP server hostname */
+  defaultServer: string;
+  /** Default SMTP server port */
+  defaultPort?: number;
+  /** Whether to use TLS when connecting to the default server */
+  useTls?: boolean;
+  /** Preserve source IP address when forwarding */
+  preserveSourceIp?: boolean;
+  /** Domain-specific routing rules */
+  domainRoutes?: Array<{
+    domain: string;
+    server: string;
+    port?: number;
+  }>;
+}
 
-  /** SmartProxy (TCP/SNI) configuration */
-  smartProxyOptions?: plugins.smartproxy.ISmartProxyOptions;
-  /** Reverse proxy host configurations for HTTP(S) layer */
-  reverseProxyConfigs?: plugins.smartproxy.IReverseProxyConfig[];
-  /** MTA (SMTP) service configuration */
+
+import type { ISmtpConfig } from './classes.smtp.config.js';
+
+export interface IDcRouterOptions {
+  /** 
+   * Direct SmartProxy configuration - gives full control over HTTP/HTTPS and TCP/SNI traffic
+   * This is the preferred way to configure HTTP/HTTPS and general TCP/SNI traffic 
+   */
+  smartProxyConfig?: plugins.smartproxy.ISmartProxyOptions;
+  
+  
+  /**
+   * SMTP store-and-forward configuration
+   * This enables advanced email processing capabilities (complementary to smartProxyConfig)
+   */
+  smtpConfig?: ISmtpConfig;
+  
+  /** 
+   * Legacy SMTP forwarding configuration
+   * If smtpConfig is provided, this will be ignored 
+   */
+  smtpForwarding?: ISmtpForwardingConfig;
+  
+  /** MTA service configuration (if not using SMTP forwarding) */
   mtaConfig?: IMtaConfig;
-  /** Existing MTA service instance to use instead of creating a new one */
+  
+  /** Existing MTA service instance to use (if not using SMTP forwarding) */
   mtaServiceInstance?: MtaService;
+  
+  /** TLS/certificate configuration */
+  tls?: {
+    /** Contact email for ACME certificates */
+    contactEmail: string;
+    /** Domain for main certificate */
+    domain?: string;
+    /** Path to certificate file (if not using auto-provisioning) */
+    certPath?: string;
+    /** Path to key file (if not using auto-provisioning) */
+    keyPath?: string;
+  };
+  
   /** DNS server configuration */
   dnsServerConfig?: plugins.smartdns.IDnsServerOptions;
 }
@@ -35,14 +94,24 @@ export interface PortProxyRuleContext {
   proxy: plugins.smartproxy.SmartProxy;
   configs: plugins.smartproxy.IPortProxySettings['domainConfigs'];
 }
+
 export class DcRouter {
-  public szDcRouterConnector = new SzDcRouterConnector(this);
   public options: IDcRouterOptions;
+  
+  // Core services
   public smartProxy?: plugins.smartproxy.SmartProxy;
   public mta?: MtaService;
   public dnsServer?: plugins.smartdns.DnsServer;
-  /** SMTP rule engine */
-  public smtpRuleEngine?: plugins.smartrule.SmartRule<any>;
+  
+  // SMTP store-and-forward components
+  public smtpServer?: SmtpServer;
+  public emailProcessor?: EmailProcessor;
+  public deliveryQueue?: DeliveryQueue;
+  public deliverySystem?: DeliverySystem;
+  
+  // Environment access 
+  private qenv = new plugins.qenv.Qenv('./', '.nogit/');
+  
   constructor(optionsArg: IDcRouterOptions) {
     // Set defaults in options
     this.options = {
@@ -51,193 +120,350 @@ export class DcRouter {
   }
 
   public async start() {
-    // Set up MTA service - use existing instance if provided
+    console.log('Starting DcRouter services...');
+    
+    try {
+      // Set up SmartProxy for HTTP/HTTPS and general TCP/SNI traffic
+      if (this.options.smartProxyConfig) {
+        await this.setupSmartProxy();
+      }
+      
+      // 2. Set up SMTP handling
+      if (this.options.smtpConfig) {
+        // Set up store-and-forward SMTP processing
+        await this.setupSmtpProcessing();
+      } else if (this.options.smtpForwarding?.enabled) {
+        // Fallback to simple SMTP forwarding for backward compatibility
+        await this.setupSmtpForwarding();
+      } else {
+        // Set up MTA service if no SMTP handling is configured
+        await this.setupMtaService();
+      }
+      
+      // 3. Set up DNS server if configured
+      if (this.options.dnsServerConfig) {
+        this.dnsServer = new plugins.smartdns.DnsServer(this.options.dnsServerConfig);
+        await this.dnsServer.start();
+        console.log('DNS server started');
+      }
+      
+      console.log('DcRouter started successfully');
+    } catch (error) {
+      console.error('Error starting DcRouter:', error);
+      // Try to clean up any services that may have started
+      await this.stop();
+      throw error;
+    }
+  }
+  
+  /**
+   * Set up SmartProxy with direct configuration
+   */
+  private async setupSmartProxy(): Promise<void> {
+    if (!this.options.smartProxyConfig) {
+      return;
+    }
+    
+    console.log('Setting up SmartProxy with direct configuration');
+    
+    // Create SmartProxy instance with full configuration
+    this.smartProxy = new plugins.smartproxy.SmartProxy(this.options.smartProxyConfig);
+    
+    // Set up event listeners
+    this.smartProxy.on('error', (err) => {
+      console.error('SmartProxy error:', err);
+    });
+    
+    if (this.options.smartProxyConfig.acme) {
+      this.smartProxy.on('certificate-issued', (event) => {
+        console.log(`Certificate issued for ${event.domain}, expires ${event.expiryDate}`);
+      });
+      
+      this.smartProxy.on('certificate-renewed', (event) => {
+        console.log(`Certificate renewed for ${event.domain}, expires ${event.expiryDate}`);
+      });
+    }
+    
+    // Start SmartProxy
+    await this.smartProxy.start();
+    
+    console.log('SmartProxy started successfully');
+  }
+  
+  
+  /**
+   * Set up the MTA service
+   */
+  private async setupMtaService() {
+    // Use existing MTA service if provided
     if (this.options.mtaServiceInstance) {
-      // Use provided MTA service instance
       this.mta = this.options.mtaServiceInstance;
       console.log('Using provided MTA service instance');
-      
-      // Get the SMTP rule engine from the provided MTA
-      this.smtpRuleEngine = this.mta.smtpRuleEngine;
     } else if (this.options.mtaConfig) {
       // Create new MTA service with the provided configuration
       this.mta = new MtaService(undefined, this.options.mtaConfig);
       console.log('Created new MTA service instance');
       
-      // Initialize SMTP rule engine
-      this.smtpRuleEngine = this.mta.smtpRuleEngine;
-    }
-
-    // TCP/SNI proxy (SmartProxy)
-    if (this.options.smartProxyOptions) {
-      // Lets setup smartacme
-      let certProvisionFunction: plugins.smartproxy.ISmartProxyOptions['certProvisionFunction'];
-
-      // Check if we can share certificate from MTA service
-      if (this.options.mtaServiceInstance && this.mta) {
-        // Share TLS certificate with MTA service (if available)
-        console.log('Using MTA service certificate for SmartProxy');
-        
-        // Create proxy function to get cert from MTA service
-        certProvisionFunction = async (domainArg) => {
-          // Get cert from provided MTA service if available
-          if (this.mta && this.mta.certificate) {
-            console.log(`Using MTA certificate for domain ${domainArg}`);
-            // Return in the format expected by SmartProxy
-            const certExpiry = this.mta.certificate.expiresAt;
-            const certObj: plugins.tsclass.network.ICert = {
-              id: `cert-${domainArg}`,
-              domainName: domainArg,
-              privateKey: this.mta.certificate.privateKey,
-              publicKey: this.mta.certificate.publicKey,
-              created: Date.now(),
-              validUntil: certExpiry instanceof Date ? certExpiry.getTime() : Date.now() + 90 * 24 * 60 * 60 * 1000,
-              csr: ''
-            };
-            return certObj;
-          } else {
-            console.log(`No MTA certificate available for domain ${domainArg}, falling back to ACME`);
-            // Return string literal instead of 'http01' enum value
-            return null; // Let SmartProxy fall back to its default mechanism
-          }
-        };
-      } else if (true) {
-        // Set up ACME for certificate provisioning
-        const smartAcmeInstance = new plugins.smartacme.SmartAcme({
-          accountEmail: this.options.smartProxyOptions.acme.accountEmail,
-          certManager: new plugins.smartacme.certmanagers.MongoCertManager({
-            mongoDbUrl: await this.szDcRouterConnector.getEnvVarOnDemand('MONGO_DB_URL'),
-            mongoDbUser: await this.szDcRouterConnector.getEnvVarOnDemand('MONGO_DB_USER'),
-            mongoDbPass: await this.szDcRouterConnector.getEnvVarOnDemand('MONGO_DB_PASS'),
-            mongoDbName: await this.szDcRouterConnector.getEnvVarOnDemand('MONGO_DB_NAME'),
-          }),
-          environment: 'production',
-          accountPrivateKey: await this.szDcRouterConnector.getEnvVarOnDemand('ACME_ACCOUNT_PRIVATE_KEY'),
-          challengeHandlers: [
-            new plugins.smartacme.handlers.Dns01Handler(new plugins.cloudflare.CloudflareAccount('')) // TODO
-          ],
-        });
-        
-        certProvisionFunction = async (domainArg) => {
-          try {
-            const domainSupported = await smartAcmeInstance.challengeHandlers[0].checkWetherDomainIsSupported(domainArg);
-            if (!domainSupported) {
-              return null; // Let SmartProxy handle with default mechanism
-            }
-            // Get the certificate and convert to ICert
-            const cert = await smartAcmeInstance.getCertificateForDomain(domainArg);
-            if (typeof cert === 'string') {
-              return null; // String result indicates fallback
-            }
-            
-          // Return in the format expected by SmartProxy
-            const result: plugins.tsclass.network.ICert = {
-              id: `cert-${domainArg}`,
-              domainName: domainArg,
-              privateKey: cert.privateKey,
-              publicKey: cert.publicKey,
-              created: Date.now(),
-              validUntil: Date.now() + 90 * 24 * 60 * 60 * 1000, // 90 days
-              csr: ''
-            };
-            return result;
-          } catch (err) {
-            console.error(`Certificate error for ${domainArg}:`, err);
-            return null; // Let SmartProxy handle with default mechanism
-          }
-        };
-      }
-
-      // Create the SmartProxy instance with the appropriate cert provisioning function
-      const smartProxyOptions = {
-        ...this.options.smartProxyOptions,
-        certProvisionFunction
-      };
-      this.smartProxy = new plugins.smartproxy.SmartProxy(smartProxyOptions);
-      
-      // Configure SmartProxy for SMTP if we have an MTA service
-      if (this.mta) {
-        this.configureSmtpProxy();
-      }
-    }
-    
-    // DNS server
-    if (this.options.dnsServerConfig) {
-      this.dnsServer = new plugins.smartdns.DnsServer(this.options.dnsServerConfig);
-    }
-
-    // Start SmartProxy if configured
-    if (this.smartProxy) {
-      await this.smartProxy.start();
-    }
-    
-    // Start MTA service if configured and it's our own service (not an external instance)
-    if (this.mta && !this.options.mtaServiceInstance) {
+      // Start the MTA service
       await this.mta.start();
+      console.log('MTA service started');
+    }
+  }
+  
+  /**
+   * Set up SMTP forwarding with SmartProxy
+   */
+  private async setupSmtpForwarding() {
+    if (!this.options.smtpForwarding) {
+      return;
     }
     
-    // Start DNS server if configured
-    if (this.dnsServer) {
-      await this.dnsServer.start();
-    }
+    const forwarding = this.options.smtpForwarding;
+    console.log('Setting up SMTP forwarding');
+    
+    // Determine which ports to listen on
+    const smtpPorts = forwarding.ports || [25, 587, 465];
+    
+    // Create SmartProxy instance for SMTP forwarding
+    const smtpProxyConfig: plugins.smartproxy.ISmartProxyOptions = {
+      // Listen on the first SMTP port
+      fromPort: smtpPorts[0],
+      // Forward to the default server
+      toPort: forwarding.defaultPort || 25,
+      targetIP: forwarding.defaultServer,
+      // Enable SNI if port 465 is included (implicit TLS)
+      sniEnabled: smtpPorts.includes(465),
+      // Preserve source IP if requested
+      preserveSourceIP: forwarding.preserveSourceIp || false,
+      // Create domain configs for SMTP routing
+      domainConfigs: forwarding.domainRoutes?.map(route => ({
+        domains: [route.domain],
+        allowedIPs: ['0.0.0.0/0'], // Allow from anywhere by default
+        targetIPs: [route.server]
+      })) || [],
+      // Include all SMTP ports in the global port ranges
+      globalPortRanges: smtpPorts.map(port => ({ from: port, to: port }))
+    };
+    
+    // Create a separate SmartProxy instance for SMTP
+    const smtpProxy = new plugins.smartproxy.SmartProxy(smtpProxyConfig);
+    
+    // Start the SMTP proxy
+    await smtpProxy.start();
+    
+    // Store the SMTP proxy reference
+    this.smartProxy = smtpProxy;
+    
+    console.log(`SMTP forwarding configured on ports ${smtpPorts.join(', ')}`);
   }
 
   /**
-   * Configure SmartProxy for SMTP ports
+   * Check if a domain matches a pattern (including wildcard support)
+   * @param domain The domain to check
+   * @param pattern The pattern to match against (e.g., "*.example.com")
+   * @returns Whether the domain matches the pattern
    */
-  public configureSmtpProxy(): void {
-    if (!this.smartProxy || !this.mta) return;
-
-    const mtaPort = this.mta.config.smtp?.port || 25;
-    try {
-      // Configure SmartProxy to forward SMTP ports to the MTA service
-      const settings = this.smartProxy.settings;
-      // Ensure localhost target for MTA
-      settings.targetIP = settings.targetIP || 'localhost';
-      // Forward all SMTP ports to the MTA port
-      settings.toPort = mtaPort;
-      // Initialize globalPortRanges if needed
-      if (!settings.globalPortRanges) {
-        settings.globalPortRanges = [];
-      }
-      // Add SMTP ports 25, 587, 465 if not already present
-      for (const port of [25, 587, 465]) {
-        if (!settings.globalPortRanges.some((r) => r.from <= port && port <= r.to)) {
-          settings.globalPortRanges.push({ from: port, to: port });
-        }
-      }
-      console.log(`Configured SmartProxy for SMTP ports: 25, 587, 465 → localhost:${mtaPort}`);
-    } catch (error) {
-      console.error('Failed to configure SmartProxy for SMTP:', error);
+  private isDomainMatch(domain: string, pattern: string): boolean {
+    // Normalize inputs
+    domain = domain.toLowerCase();
+    pattern = pattern.toLowerCase();
+    
+    // Check for exact match
+    if (domain === pattern) {
+      return true;
     }
+    
+    // Check for wildcard match (*.example.com)
+    if (pattern.startsWith('*.')) {
+      const patternSuffix = pattern.slice(2); // Remove the "*." prefix
+      
+      // Check if domain ends with the pattern suffix and has at least one character before it
+      return domain.endsWith(patternSuffix) && domain.length > patternSuffix.length;
+    }
+    
+    // No match
+    return false;
   }
 
   public async stop() {
-    // Stop SmartProxy
-    if (this.smartProxy) {
-      await this.smartProxy.stop();
-    }
+    console.log('Stopping DcRouter services...');
     
-    // Stop MTA service if it's our own (not an external instance)
-    if (this.mta && !this.options.mtaServiceInstance) {
-      await this.mta.stop();
-    }
-    
-    // Stop DNS server
-    if (this.dnsServer) {
-      await this.dnsServer.stop();
+    try {
+      // Stop all services in parallel for faster shutdown
+      await Promise.all([
+        // Stop SMTP components
+        this.stopSmtpComponents().catch(err => console.error('Error stopping SMTP components:', err)),
+        
+        // Stop HTTP SmartProxy if running
+        this.smartProxy ? this.smartProxy.stop().catch(err => console.error('Error stopping SmartProxy:', err)) : Promise.resolve(),
+        
+        // Stop MTA service if it's our own (not an external instance)
+        (this.mta && !this.options.mtaServiceInstance) ? 
+          this.mta.stop().catch(err => console.error('Error stopping MTA service:', err)) : 
+          Promise.resolve(),
+        
+        // Stop DNS server if running
+        this.dnsServer ? 
+          this.dnsServer.stop().catch(err => console.error('Error stopping DNS server:', err)) : 
+          Promise.resolve()
+      ]);
+      
+      console.log('All DcRouter services stopped');
+    } catch (error) {
+      console.error('Error during DcRouter shutdown:', error);
+      throw error;
     }
   }
 
   /**
-   * Register an SMTP routing rule
+   * Update SmartProxy configuration
+   * @param config New SmartProxy configuration
    */
-  public addSmtpRule(
-    priority: number,
-    check: (email: any) => Promise<any>,
-    action: (email: any) => Promise<any>
-  ): void {
-    this.smtpRuleEngine?.createRule(priority, check, action);
+  public async updateSmartProxyConfig(config: plugins.smartproxy.ISmartProxyOptions): Promise<void> {
+    // Stop existing SmartProxy if running
+    if (this.smartProxy) {
+      await this.smartProxy.stop();
+      this.smartProxy = undefined;
+    }
+    
+    // Update configuration
+    this.options.smartProxyConfig = config;
+    
+    // Start new SmartProxy with updated configuration
+    await this.setupSmartProxy();
+    
+    console.log('SmartProxy configuration updated');
+  }
+  
+  
+  /**
+   * Set up SMTP store-and-forward processing
+   */
+  private async setupSmtpProcessing(): Promise<void> {
+    if (!this.options.smtpConfig) {
+      return;
+    }
+    
+    console.log('Setting up SMTP store-and-forward processing');
+    
+    try {
+      // 1. Create SMTP server
+      this.smtpServer = new SmtpServer(this.options.smtpConfig);
+      
+      // 2. Create email processor
+      this.emailProcessor = new EmailProcessor(this.options.smtpConfig);
+      
+      // 3. Create delivery queue
+      this.deliveryQueue = new DeliveryQueue(this.options.smtpConfig.queue || {});
+      await this.deliveryQueue.initialize();
+      
+      // 4. Create delivery system
+      this.deliverySystem = new DeliverySystem(this.deliveryQueue);
+      
+      // 5. Connect components
+      
+      // When a message is received by the SMTP server, process it
+      this.smtpServer.on('message', async ({ session, mail, rawData }) => {
+        try {
+          // Process the message
+          const processingResult = await this.emailProcessor.processEmail(mail, rawData, session);
+          
+          // If action is queue, add to delivery queue
+          if (processingResult.action === 'queue') {
+            await this.deliveryQueue.enqueue(processingResult);
+          }
+        } catch (error) {
+          console.error('Error processing message:', error);
+        }
+      });
+      
+      // 6. Start components
+      await this.smtpServer.start();
+      await this.deliverySystem.start();
+      
+      console.log(`SMTP processing started on ports ${this.options.smtpConfig.ports.join(', ')}`);
+    } catch (error) {
+      console.error('Error setting up SMTP processing:', error);
+      
+      // Clean up any components that were started
+      if (this.deliverySystem) {
+        await this.deliverySystem.stop().catch(e => console.error('Error stopping delivery system:', e));
+      }
+      
+      if (this.deliveryQueue) {
+        await this.deliveryQueue.shutdown().catch(e => console.error('Error shutting down delivery queue:', e));
+      }
+      
+      if (this.smtpServer) {
+        await this.smtpServer.stop().catch(e => console.error('Error stopping SMTP server:', e));
+      }
+      
+      throw error;
+    }
+  }
+  
+  /**
+   * Update SMTP forwarding configuration
+   * @param config New SMTP forwarding configuration
+   */
+  public async updateSmtpForwarding(config: ISmtpForwardingConfig): Promise<void> {
+    // Stop existing SMTP components
+    await this.stopSmtpComponents();
+    
+    // Update configuration
+    this.options.smtpForwarding = config;
+    this.options.smtpConfig = undefined; // Clear any store-and-forward config
+    
+    // Restart SMTP forwarding if enabled
+    if (config.enabled) {
+      await this.setupSmtpForwarding();
+    }
+    
+    console.log('SMTP forwarding configuration updated');
+  }
+  
+  /**
+   * Update SMTP processing configuration
+   * @param config New SMTP config
+   */
+  public async updateSmtpConfig(config: ISmtpConfig): Promise<void> {
+    // Stop existing SMTP components
+    await this.stopSmtpComponents();
+    
+    // Update configuration
+    this.options.smtpConfig = config;
+    this.options.smtpForwarding = undefined; // Clear any forwarding config
+    
+    // Start SMTP processing
+    await this.setupSmtpProcessing();
+    
+    console.log('SMTP processing configuration updated');
+  }
+  
+  /**
+   * Stop all SMTP components
+   */
+  private async stopSmtpComponents(): Promise<void> {
+    // Stop delivery system
+    if (this.deliverySystem) {
+      await this.deliverySystem.stop().catch(e => console.error('Error stopping delivery system:', e));
+      this.deliverySystem = undefined;
+    }
+    
+    // Stop delivery queue
+    if (this.deliveryQueue) {
+      await this.deliveryQueue.shutdown().catch(e => console.error('Error shutting down delivery queue:', e));
+      this.deliveryQueue = undefined;
+    }
+    
+    // Stop SMTP server
+    if (this.smtpServer) {
+      await this.smtpServer.stop().catch(e => console.error('Error stopping SMTP server:', e));
+      this.smtpServer = undefined;
+    }
+    
+    // For backward compatibility: legacy SMTP proxy implementation
+    // This is no longer used with the new implementation
   }
 }
 

ts/dcrouter/classes.delivery.queue.ts

@@ -0,0 +1,453 @@
+import * as plugins from '../plugins.js';
+import type { IQueueConfig } from './classes.smtp.config.js';
+import type { IProcessingResult } from './classes.email.processor.js';
+import { EventEmitter } from 'node:events';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+
+/**
+ * Queue item status
+ */
+export type QueueItemStatus = 'pending' | 'processing' | 'delivered' | 'failed' | 'deferred';
+
+/**
+ * Queue item
+ */
+export interface IQueueItem {
+  id: string;
+  processingResult: IProcessingResult;
+  status: QueueItemStatus;
+  attempts: number;
+  nextAttempt: Date;
+  lastError?: string;
+  createdAt: Date;
+  updatedAt: Date;
+  deliveredAt?: Date;
+}
+
+/**
+ * Delivery queue component for store-and-forward functionality
+ */
+export class DeliveryQueue extends EventEmitter {
+  private config: IQueueConfig;
+  private queue: Map<string, IQueueItem> = new Map();
+  private isProcessing: boolean = false;
+  private processingInterval: NodeJS.Timeout | null = null;
+  private persistenceTimer: NodeJS.Timeout | null = null;
+  
+  /**
+   * Create a new delivery queue
+   * @param config Queue configuration
+   */
+  constructor(config: IQueueConfig) {
+    super();
+    this.config = {
+      storageType: 'memory',
+      maxRetries: 5,
+      baseRetryDelay: 60000, // 1 minute
+      maxRetryDelay: 3600000, // 1 hour
+      maxQueueSize: 10000,
+      ...config
+    };
+  }
+  
+  /**
+   * Initialize the queue
+   */
+  public async initialize(): Promise<void> {
+    try {
+      // Load queue from persistent storage if enabled
+      if (this.config.storageType === 'disk' && this.config.persistentPath) {
+        await this.load();
+      }
+      
+      // Set up processing interval
+      this.startProcessing();
+      
+      // Set up persistence interval if using disk storage
+      if (this.config.storageType === 'disk' && this.config.persistentPath) {
+        this.persistenceTimer = setInterval(() => {
+          this.save().catch(err => {
+            console.error('Error saving queue:', err);
+          });
+        }, 60000); // Save every minute
+      }
+      
+      this.emit('initialized');
+    } catch (error) {
+      console.error('Failed to initialize delivery queue:', error);
+      throw error;
+    }
+  }
+  
+  /**
+   * Start processing the queue
+   */
+  private startProcessing(): void {
+    if (this.processingInterval) {
+      clearInterval(this.processingInterval);
+    }
+    
+    this.processingInterval = setInterval(() => {
+      this.processQueue().catch(err => {
+        console.error('Error processing queue:', err);
+      });
+    }, 1000); // Check every second
+  }
+  
+  /**
+   * Add an item to the queue
+   * @param processingResult Processing result to queue
+   */
+  public async enqueue(processingResult: IProcessingResult): Promise<string> {
+    // Skip if the action is reject
+    if (processingResult.action === 'reject') {
+      throw new Error('Cannot queue a rejected message');
+    }
+    
+    // Check if queue is full
+    if (this.config.maxQueueSize && this.queue.size >= this.config.maxQueueSize) {
+      throw new Error('Queue is full');
+    }
+    
+    // Create queue item
+    const queueItem: IQueueItem = {
+      id: processingResult.id,
+      processingResult,
+      status: 'pending',
+      attempts: 0,
+      nextAttempt: new Date(),
+      createdAt: new Date(),
+      updatedAt: new Date()
+    };
+    
+    // Add to queue
+    this.queue.set(queueItem.id, queueItem);
+    
+    // Save queue if using disk storage
+    if (this.config.storageType === 'disk' && this.config.persistentPath) {
+      await this.saveItem(queueItem);
+    }
+    
+    this.emit('enqueued', queueItem);
+    
+    return queueItem.id;
+  }
+  
+  /**
+   * Process the queue
+   */
+  private async processQueue(): Promise<void> {
+    // Skip if already processing
+    if (this.isProcessing) {
+      return;
+    }
+    
+    this.isProcessing = true;
+    
+    try {
+      // Get items that are ready for delivery
+      const now = new Date();
+      const readyItems: IQueueItem[] = [];
+      
+      for (const item of this.queue.values()) {
+        if (item.status === 'pending' && item.nextAttempt <= now) {
+          readyItems.push(item);
+        }
+      }
+      
+      // If no items are ready, skip processing
+      if (!readyItems.length) {
+        return;
+      }
+      
+      // Emit event with ready items
+      this.emit('itemsReady', readyItems);
+    } finally {
+      this.isProcessing = false;
+    }
+  }
+  
+  /**
+   * Get an item from the queue
+   * @param id Item ID
+   */
+  public getItem(id: string): IQueueItem | undefined {
+    return this.queue.get(id);
+  }
+  
+  /**
+   * Get all items in the queue
+   */
+  public getAllItems(): IQueueItem[] {
+    return Array.from(this.queue.values());
+  }
+  
+  /**
+   * Get items by status
+   * @param status Status to filter by
+   */
+  public getItemsByStatus(status: QueueItemStatus): IQueueItem[] {
+    return Array.from(this.queue.values()).filter(item => item.status === status);
+  }
+  
+  /**
+   * Update an item in the queue
+   * @param id Item ID
+   * @param updates Updates to apply
+   */
+  public async updateItem(id: string, updates: Partial<IQueueItem>): Promise<boolean> {
+    const item = this.queue.get(id);
+    
+    if (!item) {
+      return false;
+    }
+    
+    // Apply updates
+    Object.assign(item, {
+      ...updates,
+      updatedAt: new Date()
+    });
+    
+    // Save queue if using disk storage
+    if (this.config.storageType === 'disk' && this.config.persistentPath) {
+      await this.saveItem(item);
+    }
+    
+    this.emit('itemUpdated', item);
+    
+    return true;
+  }
+  
+  /**
+   * Mark an item as delivered
+   * @param id Item ID
+   */
+  public async markDelivered(id: string): Promise<boolean> {
+    return this.updateItem(id, {
+      status: 'delivered',
+      deliveredAt: new Date()
+    });
+  }
+  
+  /**
+   * Mark an item as failed
+   * @param id Item ID
+   * @param error Error message
+   */
+  public async markFailed(id: string, error: string): Promise<boolean> {
+    const item = this.queue.get(id);
+    
+    if (!item) {
+      return false;
+    }
+    
+    // Check if max retries reached
+    if (item.attempts >= (this.config.maxRetries || 5)) {
+      return this.updateItem(id, {
+        status: 'failed',
+        lastError: error
+      });
+    }
+    
+    // Calculate next attempt time with exponential backoff
+    const attempts = item.attempts + 1;
+    const baseDelay = this.config.baseRetryDelay || 60000; // 1 minute
+    const maxDelay = this.config.maxRetryDelay || 3600000; // 1 hour
+    
+    const delay = Math.min(
+      baseDelay * Math.pow(2, attempts - 1),
+      maxDelay
+    );
+    
+    const nextAttempt = new Date(Date.now() + delay);
+    
+    return this.updateItem(id, {
+      status: 'deferred',
+      attempts,
+      nextAttempt,
+      lastError: error
+    });
+  }
+  
+  /**
+   * Remove an item from the queue
+   * @param id Item ID
+   */
+  public async removeItem(id: string): Promise<boolean> {
+    if (!this.queue.has(id)) {
+      return false;
+    }
+    
+    this.queue.delete(id);
+    
+    // Remove from disk if using disk storage
+    if (this.config.storageType === 'disk' && this.config.persistentPath) {
+      await this.removeItemFile(id);
+    }
+    
+    this.emit('itemRemoved', id);
+    
+    return true;
+  }
+  
+  /**
+   * Pause queue processing
+   */
+  public pause(): void {
+    if (this.processingInterval) {
+      clearInterval(this.processingInterval);
+      this.processingInterval = null;
+    }
+    
+    this.emit('paused');
+  }
+  
+  /**
+   * Resume queue processing
+   */
+  public resume(): void {
+    if (!this.processingInterval) {
+      this.startProcessing();
+    }
+    
+    this.emit('resumed');
+  }
+  
+  /**
+   * Shutdown the queue
+   */
+  public async shutdown(): Promise<void> {
+    // Stop processing
+    if (this.processingInterval) {
+      clearInterval(this.processingInterval);
+      this.processingInterval = null;
+    }
+    
+    // Stop persistence timer
+    if (this.persistenceTimer) {
+      clearInterval(this.persistenceTimer);
+      this.persistenceTimer = null;
+    }
+    
+    // Save queue if using disk storage
+    if (this.config.storageType === 'disk' && this.config.persistentPath) {
+      await this.save();
+    }
+    
+    this.emit('shutdown');
+  }
+  
+  /**
+   * Load queue from disk
+   */
+  private async load(): Promise<void> {
+    if (!this.config.persistentPath) {
+      return;
+    }
+    
+    try {
+      // Create directory if it doesn't exist
+      if (!fs.existsSync(this.config.persistentPath)) {
+        fs.mkdirSync(this.config.persistentPath, { recursive: true });
+      }
+      
+      // Read the queue directory
+      const files = fs.readdirSync(this.config.persistentPath);
+      
+      // Load each item
+      for (const file of files) {
+        if (file.endsWith('.json')) {
+          try {
+            const filePath = path.join(this.config.persistentPath, file);
+            const data = fs.readFileSync(filePath, 'utf8');
+            const item = JSON.parse(data) as IQueueItem;
+            
+            // Convert string dates back to Date objects
+            item.nextAttempt = new Date(item.nextAttempt);
+            item.createdAt = new Date(item.createdAt);
+            item.updatedAt = new Date(item.updatedAt);
+            if (item.deliveredAt) {
+              item.deliveredAt = new Date(item.deliveredAt);
+            }
+            
+            // Add to queue
+            this.queue.set(item.id, item);
+          } catch (err) {
+            console.error(`Error loading queue item ${file}:`, err);
+          }
+        }
+      }
+      
+      console.log(`Loaded ${this.queue.size} items from queue`);
+    } catch (error) {
+      console.error('Error loading queue:', error);
+      throw error;
+    }
+  }
+  
+  /**
+   * Save queue to disk
+   */
+  private async save(): Promise<void> {
+    if (!this.config.persistentPath) {
+      return;
+    }
+    
+    try {
+      // Create directory if it doesn't exist
+      if (!fs.existsSync(this.config.persistentPath)) {
+        fs.mkdirSync(this.config.persistentPath, { recursive: true });
+      }
+      
+      // Save each item
+      const savePromises = Array.from(this.queue.values()).map(item => this.saveItem(item));
+      
+      await Promise.all(savePromises);
+    } catch (error) {
+      console.error('Error saving queue:', error);
+      throw error;
+    }
+  }
+  
+  /**
+   * Save a single item to disk
+   * @param item Queue item to save
+   */
+  private async saveItem(item: IQueueItem): Promise<void> {
+    if (!this.config.persistentPath) {
+      return;
+    }
+    
+    try {
+      const filePath = path.join(this.config.persistentPath, `${item.id}.json`);
+      const data = JSON.stringify(item, null, 2);
+      
+      await fs.promises.writeFile(filePath, data, 'utf8');
+    } catch (error) {
+      console.error(`Error saving queue item ${item.id}:`, error);
+      throw error;
+    }
+  }
+  
+  /**
+   * Remove a single item file from disk
+   * @param id Item ID
+   */
+  private async removeItemFile(id: string): Promise<void> {
+    if (!this.config.persistentPath) {
+      return;
+    }
+    
+    try {
+      const filePath = path.join(this.config.persistentPath, `${id}.json`);
+      
+      if (fs.existsSync(filePath)) {
+        await fs.promises.unlink(filePath);
+      }
+    } catch (error) {
+      console.error(`Error removing queue item file ${id}:`, error);
+      throw error;
+    }
+  }
+}

ts/dcrouter/classes.delivery.system.ts

@@ -0,0 +1,272 @@
+import * as plugins from '../plugins.js';
+import { DeliveryQueue } from './classes.delivery.queue.js';
+import type { IQueueItem } from './classes.delivery.queue.js';
+import type { IProcessingResult, IRoutingDecision } from './classes.email.processor.js';
+import { EventEmitter } from 'node:events';
+import { Readable } from 'node:stream';
+
+/**
+ * Result of a delivery attempt
+ */
+export interface IDeliveryResult {
+  id: string;
+  success: boolean;
+  error?: string;
+  timestamp: Date;
+  destination: string;
+  messageId?: string;
+}
+
+/**
+ * Delivery system statistics
+ */
+export interface IDeliveryStats {
+  delivered: number;
+  failed: number;
+  pending: number;
+  inProgress: number;
+  totalAttempts: number;
+}
+
+/**
+ * Email delivery system with retry logic
+ */
+export class DeliverySystem extends EventEmitter {
+  private queue: DeliveryQueue;
+  private isRunning: boolean = false;
+  private stats: IDeliveryStats = {
+    delivered: 0,
+    failed: 0,
+    pending: 0,
+    inProgress: 0,
+    totalAttempts: 0
+  };
+  private connections: Map<string, any> = new Map();
+  private maxConcurrent: number = 5;
+  
+  /**
+   * Create a new delivery system
+   * @param queue Delivery queue to process
+   * @param maxConcurrent Maximum concurrent deliveries
+   */
+  constructor(queue: DeliveryQueue, maxConcurrent: number = 5) {
+    super();
+    this.queue = queue;
+    this.maxConcurrent = maxConcurrent;
+    
+    // Listen for queue events
+    this.setupQueueListeners();
+  }
+  
+  /**
+   * Set up queue event listeners
+   */
+  private setupQueueListeners(): void {
+    // Listen for items ready to be delivered
+    this.queue.on('itemsReady', (items: IQueueItem[]) => {
+      if (this.isRunning) {
+        this.processItems(items).catch(err => {
+          console.error('Error processing queue items:', err);
+        });
+      }
+    });
+  }
+  
+  /**
+   * Start the delivery system
+   */
+  public async start(): Promise<void> {
+    this.isRunning = true;
+    this.emit('started');
+    
+    // Update stats
+    this.updateStats();
+  }
+  
+  /**
+   * Stop the delivery system
+   */
+  public async stop(): Promise<void> {
+    this.isRunning = false;
+    
+    // Close all connections
+    for (const connection of this.connections.values()) {
+      try {
+        if (connection.close) {
+          await connection.close();
+        }
+      } catch (error) {
+        console.error('Error closing connection:', error);
+      }
+    }
+    
+    this.connections.clear();
+    
+    this.emit('stopped');
+  }
+  
+  /**
+   * Process items from the queue
+   * @param items Queue items to process
+   */
+  private async processItems(items: IQueueItem[]): Promise<void> {
+    // Skip if not running
+    if (!this.isRunning) {
+      return;
+    }
+    
+    // Count in-progress items
+    const inProgress = Array.from(this.queue.getAllItems()).filter(item => 
+      item.status === 'processing'
+    ).length;
+    
+    // Calculate how many items we can process concurrently
+    const availableSlots = Math.max(0, this.maxConcurrent - inProgress);
+    
+    if (availableSlots === 0) {
+      return;
+    }
+    
+    // Process up to availableSlots items
+    const itemsToProcess = items.slice(0, availableSlots);
+    
+    // Process each item
+    for (const item of itemsToProcess) {
+      // Mark item as processing
+      await this.queue.updateItem(item.id, {
+        status: 'processing'
+      });
+      
+      // Deliver the item
+      this.deliverItem(item).catch(error => {
+        console.error(`Error delivering item ${item.id}:`, error);
+      });
+    }
+    
+    // Update stats
+    this.updateStats();
+  }
+  
+  /**
+   * Deliver a single queue item
+   * @param item Queue item to deliver
+   */
+  private async deliverItem(item: IQueueItem): Promise<void> {
+    try {
+      // Update stats
+      this.stats.inProgress++;
+      this.stats.totalAttempts++;
+      
+      // Get processing result
+      const result = item.processingResult;
+      
+      // Attempt delivery
+      const deliveryResult = await this.deliverEmail(result);
+      
+      if (deliveryResult.success) {
+        // Mark as delivered
+        await this.queue.markDelivered(item.id);
+        
+        // Update stats
+        this.stats.delivered++;
+        this.stats.inProgress--;
+        
+        // Emit delivery event
+        this.emit('delivered', {
+          item,
+          result: deliveryResult
+        });
+      } else {
+        // Mark as failed (will retry if attempts < maxRetries)
+        await this.queue.markFailed(item.id, deliveryResult.error || 'Unknown error');
+        
+        // Update stats
+        this.stats.inProgress--;
+        
+        // Emit failure event
+        this.emit('deliveryFailed', {
+          item,
+          result: deliveryResult
+        });
+      }
+      
+      // Update stats
+      this.updateStats();
+    } catch (error) {
+      console.error(`Error in deliverItem for ${item.id}:`, error);
+      
+      // Mark as failed
+      await this.queue.markFailed(item.id, error.message || 'Internal error');
+      
+      // Update stats
+      this.stats.inProgress--;
+      this.updateStats();
+    }
+  }
+  
+  /**
+   * Deliver an email to its destination
+   * @param result Processing result containing the email to deliver
+   */
+  private async deliverEmail(result: IProcessingResult): Promise<IDeliveryResult> {
+    const { routing, metadata, rawData } = result;
+    const { id, targetServer, port, useTls, authentication } = routing;
+    
+    try {
+      // Create a transport for delivery
+      // In a real implementation, this would use nodemailer or a similar library
+      console.log(`Delivering email ${id} to ${targetServer}:${port} (TLS: ${useTls})`);
+      
+      // Simulate delivery
+      await new Promise(resolve => setTimeout(resolve, 100));
+      
+      // Simulate success
+      // In a real implementation, we would actually send the email
+      const success = Math.random() > 0.1; // 90% success rate for simulation
+      
+      if (!success) {
+        throw new Error('Simulated delivery failure');
+      }
+      
+      // Return success result
+      return {
+        id,
+        success: true,
+        timestamp: new Date(),
+        destination: `${targetServer}:${port}`,
+        messageId: `${id}@example.com`
+      };
+    } catch (error) {
+      console.error(`Delivery error for ${id}:`, error);
+      
+      // Return failure result
+      return {
+        id,
+        success: false,
+        error: error.message || 'Unknown error',
+        timestamp: new Date(),
+        destination: `${targetServer}:${port}`
+      };
+    }
+  }
+  
+  /**
+   * Update delivery system statistics
+   */
+  private updateStats(): void {
+    // Get pending items
+    this.stats.pending = Array.from(this.queue.getAllItems()).filter(item => 
+      item.status === 'pending' || item.status === 'deferred'
+    ).length;
+    
+    // Emit stats update
+    this.emit('statsUpdated', this.getStats());
+  }
+  
+  /**
+   * Get current delivery statistics
+   */
+  public getStats(): IDeliveryStats {
+    return { ...this.stats };
+  }
+}

ts/dcrouter/classes.email.domainrouter.ts

@@ -0,0 +1,431 @@
+import * as plugins from '../plugins.js';
+
+/**
+ * Domain group configuration for applying consistent rules across related domains
+ */
+export interface IDomainGroup {
+  /** Unique identifier for the domain group */
+  id: string;
+  /** Human-readable name for the domain group */
+  name: string;
+  /** List of domains in this group */
+  domains: string[];
+  /** Priority for this domain group (higher takes precedence) */
+  priority?: number;
+  /** Description of this domain group */
+  description?: string;
+}
+
+/**
+ * Domain pattern with wildcard support for matching domains
+ */
+export interface IDomainPattern {
+  /** The domain pattern, e.g. "example.com" or "*.example.com" */
+  pattern: string;
+  /** Whether this is an exact match or wildcard pattern */
+  isWildcard: boolean;
+}
+
+/**
+ * Email routing rule for determining how to handle emails for specific domains
+ */
+export interface IEmailRoutingRule {
+  /** Unique identifier for this rule */
+  id: string;
+  /** Human-readable name for this rule */
+  name: string;
+  /** Source domain patterns to match (from address) */
+  sourceDomains?: IDomainPattern[];
+  /** Destination domain patterns to match (to address) */
+  destinationDomains?: IDomainPattern[];
+  /** Domain groups this rule applies to */
+  domainGroups?: string[];
+  /** Priority of this rule (higher takes precedence) */
+  priority: number;
+  /** Action to take when rule matches */
+  action: 'route' | 'block' | 'tag' | 'filter';
+  /** Target server for routing */
+  targetServer?: string;
+  /** Target port for routing */
+  targetPort?: number;
+  /** Whether to use TLS when routing */
+  useTls?: boolean;
+  /** Authentication details for routing */
+  auth?: {
+    /** Username for authentication */
+    username?: string;
+    /** Password for authentication */
+    password?: string;
+    /** Authentication type */
+    type?: 'PLAIN' | 'LOGIN' | 'OAUTH2';
+  };
+  /** Headers to add or modify when rule matches */
+  headers?: {
+    /** Header name */
+    name: string;
+    /** Header value */
+    value: string;
+    /** Whether to append to existing header or replace */
+    append?: boolean;
+  }[];
+  /** Whether this rule is enabled */
+  enabled: boolean;
+}
+
+/**
+ * Configuration for email domain-based routing
+ */
+export interface IEmailDomainRoutingConfig {
+  /** Whether domain-based routing is enabled */
+  enabled: boolean;
+  /** Routing rules list */
+  rules: IEmailRoutingRule[];
+  /** Domain groups for organization */
+  domainGroups?: IDomainGroup[];
+  /** Default target server for unmatched domains */
+  defaultTargetServer?: string;
+  /** Default target port for unmatched domains */
+  defaultTargetPort?: number;
+  /** Whether to use TLS for the default route */
+  defaultUseTls?: boolean;
+}
+
+/**
+ * Class for managing domain-based email routing
+ */
+export class EmailDomainRouter {
+  /** Configuration for domain-based routing */
+  private config: IEmailDomainRoutingConfig;
+  /** Domain groups indexed by ID */
+  private domainGroups: Map<string, IDomainGroup> = new Map();
+  /** Sorted rules cache for faster processing */
+  private sortedRules: IEmailRoutingRule[] = [];
+  /** Whether the rules need to be re-sorted */
+  private rulesSortNeeded = true;
+
+  /**
+   * Create a new EmailDomainRouter
+   * @param config Configuration for domain-based routing
+   */
+  constructor(config: IEmailDomainRoutingConfig) {
+    this.config = config;
+    this.initialize();
+  }
+
+  /**
+   * Initialize the domain router
+   */
+  private initialize(): void {
+    // Return early if routing is not enabled
+    if (!this.config.enabled) {
+      return;
+    }
+
+    // Initialize domain groups
+    if (this.config.domainGroups) {
+      for (const group of this.config.domainGroups) {
+        this.domainGroups.set(group.id, group);
+      }
+    }
+
+    // Sort rules by priority
+    this.sortRules();
+  }
+
+  /**
+   * Sort rules by priority (higher first)
+   */
+  private sortRules(): void {
+    if (!this.config.rules || !this.config.enabled) {
+      this.sortedRules = [];
+      this.rulesSortNeeded = false;
+      return;
+    }
+
+    this.sortedRules = [...this.config.rules]
+      .filter(rule => rule.enabled)
+      .sort((a, b) => b.priority - a.priority);
+
+    this.rulesSortNeeded = false;
+  }
+
+  /**
+   * Add a new routing rule
+   * @param rule The routing rule to add
+   */
+  public addRule(rule: IEmailRoutingRule): void {
+    if (!this.config.rules) {
+      this.config.rules = [];
+    }
+
+    // Check if rule already exists
+    const existingIndex = this.config.rules.findIndex(r => r.id === rule.id);
+    if (existingIndex >= 0) {
+      // Update existing rule
+      this.config.rules[existingIndex] = rule;
+    } else {
+      // Add new rule
+      this.config.rules.push(rule);
+    }
+
+    this.rulesSortNeeded = true;
+  }
+
+  /**
+   * Remove a routing rule by ID
+   * @param ruleId ID of the rule to remove
+   * @returns Whether the rule was removed
+   */
+  public removeRule(ruleId: string): boolean {
+    if (!this.config.rules) {
+      return false;
+    }
+
+    const initialLength = this.config.rules.length;
+    this.config.rules = this.config.rules.filter(rule => rule.id !== ruleId);
+    
+    if (initialLength !== this.config.rules.length) {
+      this.rulesSortNeeded = true;
+      return true;
+    }
+    
+    return false;
+  }
+
+  /**
+   * Add a domain group
+   * @param group The domain group to add
+   */
+  public addDomainGroup(group: IDomainGroup): void {
+    if (!this.config.domainGroups) {
+      this.config.domainGroups = [];
+    }
+
+    // Check if group already exists
+    const existingIndex = this.config.domainGroups.findIndex(g => g.id === group.id);
+    if (existingIndex >= 0) {
+      // Update existing group
+      this.config.domainGroups[existingIndex] = group;
+    } else {
+      // Add new group
+      this.config.domainGroups.push(group);
+    }
+
+    // Update domain groups map
+    this.domainGroups.set(group.id, group);
+  }
+
+  /**
+   * Remove a domain group by ID
+   * @param groupId ID of the group to remove
+   * @returns Whether the group was removed
+   */
+  public removeDomainGroup(groupId: string): boolean {
+    if (!this.config.domainGroups) {
+      return false;
+    }
+
+    const initialLength = this.config.domainGroups.length;
+    this.config.domainGroups = this.config.domainGroups.filter(group => group.id !== groupId);
+    
+    if (initialLength !== this.config.domainGroups.length) {
+      this.domainGroups.delete(groupId);
+      return true;
+    }
+    
+    return false;
+  }
+
+  /**
+   * Determine routing for an email
+   * @param fromDomain The sender domain
+   * @param toDomain The recipient domain
+   * @returns Routing decision or null if no matching rule
+   */
+  public getRoutingForEmail(fromDomain: string, toDomain: string): {
+    targetServer: string;
+    targetPort: number;
+    useTls: boolean;
+    auth?: {
+      username?: string;
+      password?: string;
+      type?: 'PLAIN' | 'LOGIN' | 'OAUTH2';
+    };
+    headers?: {
+      name: string;
+      value: string;
+      append?: boolean;
+    }[];
+  } | null {
+    // Return default routing if routing is not enabled
+    if (!this.config.enabled) {
+      return this.getDefaultRouting();
+    }
+
+    // Sort rules if needed
+    if (this.rulesSortNeeded) {
+      this.sortRules();
+    }
+
+    // Normalize domains
+    fromDomain = fromDomain.toLowerCase();
+    toDomain = toDomain.toLowerCase();
+
+    // Check each rule in priority order
+    for (const rule of this.sortedRules) {
+      if (!rule.enabled) continue;
+
+      // Check if rule applies to this email
+      if (this.ruleMatchesEmail(rule, fromDomain, toDomain)) {
+        // Handle different actions
+        switch (rule.action) {
+          case 'route':
+            // Return routing information
+            return {
+              targetServer: rule.targetServer || this.config.defaultTargetServer || 'localhost',
+              targetPort: rule.targetPort || this.config.defaultTargetPort || 25,
+              useTls: rule.useTls ?? this.config.defaultUseTls ?? false,
+              auth: rule.auth,
+              headers: rule.headers
+            };
+          case 'block':
+            // Return null to indicate email should be blocked
+            return null;
+          case 'tag':
+          case 'filter':
+            // For tagging/filtering, we need to apply headers but continue checking rules
+            // This is simplified for now, in a real implementation we'd aggregate headers
+            continue;
+        }
+      }
+    }
+
+    // No rule matched, use default routing
+    return this.getDefaultRouting();
+  }
+
+  /**
+   * Check if a rule matches an email
+   * @param rule The routing rule to check
+   * @param fromDomain The sender domain
+   * @param toDomain The recipient domain
+   * @returns Whether the rule matches the email
+   */
+  private ruleMatchesEmail(rule: IEmailRoutingRule, fromDomain: string, toDomain: string): boolean {
+    // Check source domains
+    if (rule.sourceDomains && rule.sourceDomains.length > 0) {
+      const matchesSourceDomain = rule.sourceDomains.some(
+        pattern => this.domainMatchesPattern(fromDomain, pattern)
+      );
+      if (!matchesSourceDomain) {
+        return false;
+      }
+    }
+
+    // Check destination domains
+    if (rule.destinationDomains && rule.destinationDomains.length > 0) {
+      const matchesDestinationDomain = rule.destinationDomains.some(
+        pattern => this.domainMatchesPattern(toDomain, pattern)
+      );
+      if (!matchesDestinationDomain) {
+        return false;
+      }
+    }
+
+    // Check domain groups
+    if (rule.domainGroups && rule.domainGroups.length > 0) {
+      // Check if either domain is in any of the specified groups
+      const domainsInGroups = rule.domainGroups
+        .map(groupId => this.domainGroups.get(groupId))
+        .filter(Boolean)
+        .some(group => 
+          group.domains.includes(fromDomain) || 
+          group.domains.includes(toDomain)
+        );
+      
+      if (!domainsInGroups) {
+        return false;
+      }
+    }
+
+    // If we got here, all checks passed
+    return true;
+  }
+
+  /**
+   * Check if a domain matches a pattern
+   * @param domain The domain to check
+   * @param pattern The pattern to match against
+   * @returns Whether the domain matches the pattern
+   */
+  private domainMatchesPattern(domain: string, pattern: IDomainPattern): boolean {
+    domain = domain.toLowerCase();
+    const patternStr = pattern.pattern.toLowerCase();
+
+    // Exact match
+    if (!pattern.isWildcard) {
+      return domain === patternStr;
+    }
+
+    // Wildcard match (*.example.com)
+    if (patternStr.startsWith('*.')) {
+      const suffix = patternStr.substring(2);
+      return domain.endsWith(suffix) && domain.length > suffix.length;
+    }
+
+    // Invalid pattern
+    return false;
+  }
+
+  /**
+   * Get default routing information
+   * @returns Default routing or null if no default configured
+   */
+  private getDefaultRouting(): {
+    targetServer: string;
+    targetPort: number;
+    useTls: boolean;
+  } | null {
+    if (!this.config.defaultTargetServer) {
+      return null;
+    }
+
+    return {
+      targetServer: this.config.defaultTargetServer,
+      targetPort: this.config.defaultTargetPort || 25,
+      useTls: this.config.defaultUseTls || false
+    };
+  }
+
+  /**
+   * Get the current configuration
+   * @returns Current domain routing configuration
+   */
+  public getConfig(): IEmailDomainRoutingConfig {
+    return this.config;
+  }
+
+  /**
+   * Update the configuration
+   * @param config New domain routing configuration
+   */
+  public updateConfig(config: IEmailDomainRoutingConfig): void {
+    this.config = config;
+    this.rulesSortNeeded = true;
+    this.initialize();
+  }
+
+  /**
+   * Enable domain routing
+   */
+  public enable(): void {
+    this.config.enabled = true;
+  }
+
+  /**
+   * Disable domain routing
+   */
+  public disable(): void {
+    this.config.enabled = false;
+  }
+}

ts/dcrouter/classes.email.processor.ts

@@ -0,0 +1,495 @@
+import * as plugins from '../plugins.js';
+import type { ISmtpConfig, IContentScannerConfig, ITransformationConfig } from './classes.smtp.config.js';
+import type { ISmtpSession } from './classes.smtp.server.js';
+import { EventEmitter } from 'node:events';
+
+// Create standalone types to avoid interface compatibility issues
+interface AddressObject {
+  address?: string;
+  name?: string;
+  [key: string]: any;
+}
+
+interface ExtendedAddressObject {
+  value: AddressObject | AddressObject[];
+  [key: string]: any;
+}
+
+// Don't extend ParsedMail directly to avoid type compatibility issues
+interface ExtendedParsedMail {
+  // Basic properties from ParsedMail
+  subject?: string;
+  text?: string;
+  textAsHtml?: string;
+  html?: string;
+  attachments?: Array<any>;
+  headers?: Map<string, any>;
+  headerLines?: Array<{key: string; line: string}>;
+  messageId?: string;
+  date?: Date;
+  
+  // Extended address objects
+  from?: ExtendedAddressObject;
+  to?: ExtendedAddressObject;
+  cc?: ExtendedAddressObject;
+  bcc?: ExtendedAddressObject;
+  
+  // Add any other properties we need
+  [key: string]: any;
+}
+
+/**
+ * Email metadata extracted from parsed mail
+ */
+export interface IEmailMetadata {
+  id: string;
+  from: string;
+  fromDomain: string;
+  to: string[];
+  toDomains: string[];
+  subject?: string;
+  size: number;
+  hasAttachments: boolean;
+  receivedAt: Date;
+  clientIp: string;
+  authenticated: boolean;
+  authUser?: string;
+}
+
+/**
+ * Content scanning result
+ */
+export interface IScanResult {
+  id: string;
+  spamScore?: number;
+  hasVirus?: boolean;
+  blockedAttachments?: string[];
+  action: 'accept' | 'tag' | 'reject';
+  reason?: string;
+}
+
+/**
+ * Routing decision for an email
+ */
+export interface IRoutingDecision {
+  id: string;
+  targetServer: string;
+  port: number;
+  useTls: boolean;
+  authentication?: {
+    user?: string;
+    pass?: string;
+  };
+  headers?: Array<{
+    name: string;
+    value: string;
+    append?: boolean;
+  }>;
+  signDkim?: boolean;
+  dkimOptions?: {
+    domainName: string;
+    keySelector: string;
+    privateKey: string;
+  };
+}
+
+/**
+ * Complete processing result
+ */
+export interface IProcessingResult {
+  id: string;
+  metadata: IEmailMetadata;
+  scanResult: IScanResult;
+  routing: IRoutingDecision;
+  modifiedMessage?: ExtendedParsedMail;
+  originalMessage: ExtendedParsedMail;
+  rawData: string;
+  action: 'queue' | 'reject';
+  session: ISmtpSession;
+}
+
+/**
+ * Email Processor handles email processing pipeline
+ */
+export class EmailProcessor extends EventEmitter {
+  private config: ISmtpConfig;
+  private processingQueue: Map<string, IProcessingResult> = new Map();
+  
+  /**
+   * Create a new email processor
+   * @param config SMTP configuration
+   */
+  constructor(config: ISmtpConfig) {
+    super();
+    this.config = config;
+  }
+  
+  /**
+   * Process an email message
+   * @param message Parsed email message
+   * @param rawData Raw email data
+   * @param session SMTP session
+   */
+  public async processEmail(
+    message: ExtendedParsedMail,
+    rawData: string,
+    session: ISmtpSession
+  ): Promise<IProcessingResult> {
+    try {
+      // Generate ID for this processing task
+      const id = plugins.uuid.v4();
+      
+      // Extract metadata
+      const metadata = await this.extractMetadata(message, session, id);
+      
+      // Scan content if enabled
+      const scanResult = await this.scanContent(message, metadata);
+      
+      // If content scanning rejects the message, return early
+      if (scanResult.action === 'reject') {
+        const result: IProcessingResult = {
+          id,
+          metadata,
+          scanResult,
+          routing: {
+            id,
+            targetServer: '',
+            port: 0,
+            useTls: false
+          },
+          originalMessage: message,
+          rawData,
+          action: 'reject',
+          session
+        };
+        
+        this.emit('rejected', result);
+        return result;
+      }
+      
+      // Determine routing
+      const routing = await this.determineRouting(message, metadata);
+      
+      // Apply transformations
+      const modifiedMessage = await this.applyTransformations(message, routing, scanResult);
+      
+      // Create processing result
+      const result: IProcessingResult = {
+        id,
+        metadata,
+        scanResult,
+        routing,
+        modifiedMessage,
+        originalMessage: message,
+        rawData,
+        action: 'queue',
+        session
+      };
+      
+      // Add to processing queue
+      this.processingQueue.set(id, result);
+      
+      // Emit processed event
+      this.emit('processed', result);
+      
+      return result;
+    } catch (error) {
+      console.error('Error processing email:', error);
+      throw error;
+    }
+  }
+  
+  /**
+   * Extract metadata from email message
+   * @param message Parsed email
+   * @param session SMTP session
+   * @param id Processing ID
+   */
+  private async extractMetadata(
+    message: ExtendedParsedMail,
+    session: ISmtpSession,
+    id: string
+  ): Promise<IEmailMetadata> {
+    // Extract sender information
+    let from = '';
+    if (message.from && message.from.value) {
+      const fromValue = message.from.value;
+      if (Array.isArray(fromValue)) {
+        from = fromValue[0]?.address || '';
+      } else if (typeof fromValue === 'object' && 'address' in fromValue && fromValue.address) {
+        from = fromValue.address;
+      }
+    }
+    const fromDomain = from.split('@')[1] || '';
+    
+    // Extract recipient information
+    let to: string[] = [];
+    if (message.to && message.to.value) {
+      const toValue = message.to.value;
+      if (Array.isArray(toValue)) {
+        to = toValue
+          .map(addr => (addr && 'address' in addr) ? addr.address || '' : '')
+          .filter(Boolean);
+      } else if (typeof toValue === 'object' && 'address' in toValue && toValue.address) {
+        to = [toValue.address];
+      }
+    }
+    const toDomains = to.map(addr => addr.split('@')[1] || '');
+    
+    // Create metadata
+    return {
+      id,
+      from,
+      fromDomain,
+      to,
+      toDomains,
+      subject: message.subject,
+      size: Buffer.byteLength(message.html || message.textAsHtml || message.text || ''),
+      hasAttachments: message.attachments?.length > 0,
+      receivedAt: new Date(),
+      clientIp: session.remoteAddress,
+      authenticated: !!session.user,
+      authUser: session.user?.username
+    };
+  }
+  
+  /**
+   * Scan email content
+   * @param message Parsed email
+   * @param metadata Email metadata
+   */
+  private async scanContent(
+    message: ExtendedParsedMail,
+    metadata: IEmailMetadata
+  ): Promise<IScanResult> {
+    // Skip if content scanning is disabled
+    if (!this.config.contentScanning || !this.config.scanners?.length) {
+      return {
+        id: metadata.id,
+        action: 'accept'
+      };
+    }
+    
+    // Default result
+    const result: IScanResult = {
+      id: metadata.id,
+      action: 'accept'
+    };
+    
+    // Placeholder for scanning results
+    let spamFound = false;
+    let virusFound = false;
+    const blockedAttachments: string[] = [];
+    
+    // Apply each scanner
+    for (const scanner of this.config.scanners) {
+      switch (scanner.type) {
+        case 'spam':
+          // Placeholder for spam scanning
+          // In a real implementation, we would use a spam scanning library
+          const spamScore = Math.random() * 10; // Fake score between 0-10
+          result.spamScore = spamScore;
+          
+          if (scanner.threshold && spamScore > scanner.threshold) {
+            spamFound = true;
+            if (scanner.action === 'reject') {
+              result.action = 'reject';
+              result.reason = `Spam score ${spamScore} exceeds threshold ${scanner.threshold}`;
+            } else if (scanner.action === 'tag') {
+              result.action = 'tag';
+            }
+          }
+          break;
+          
+        case 'virus':
+          // Placeholder for virus scanning
+          // In a real implementation, we would use a virus scanning library
+          const hasVirus = false; // Fake result
+          result.hasVirus = hasVirus;
+          
+          if (hasVirus) {
+            virusFound = true;
+            if (scanner.action === 'reject') {
+              result.action = 'reject';
+              result.reason = 'Message contains virus';
+            } else if (scanner.action === 'tag') {
+              result.action = 'tag';
+            }
+          }
+          break;
+          
+        case 'attachment':
+          // Check attachments against blocked extensions
+          if (scanner.blockedExtensions && message.attachments?.length) {
+            for (const attachment of message.attachments) {
+              const filename = attachment.filename || '';
+              const extension = filename.substring(filename.lastIndexOf('.')).toLowerCase();
+              
+              if (scanner.blockedExtensions.includes(extension)) {
+                blockedAttachments.push(filename);
+                
+                if (scanner.action === 'reject') {
+                  result.action = 'reject';
+                  result.reason = `Blocked attachment type: ${extension}`;
+                } else if (scanner.action === 'tag') {
+                  result.action = 'tag';
+                }
+              }
+            }
+          }
+          break;
+      }
+      
+      // Set blocked attachments in result if any
+      if (blockedAttachments.length) {
+        result.blockedAttachments = blockedAttachments;
+      }
+    }
+    
+    return result;
+  }
+  
+  /**
+   * Determine routing for an email
+   * @param message Parsed email
+   * @param metadata Email metadata
+   */
+  private async determineRouting(
+    message: ExtendedParsedMail,
+    metadata: IEmailMetadata
+  ): Promise<IRoutingDecision> {
+    // Start with the default routing
+    const defaultRouting: IRoutingDecision = {
+      id: metadata.id,
+      targetServer: this.config.defaultServer,
+      port: this.config.defaultPort || 25,
+      useTls: this.config.useTls || false
+    };
+    
+    // If no domain configs, use default routing
+    if (!this.config.domainConfigs?.length) {
+      return defaultRouting;
+    }
+    
+    // Try to find matching domain config based on recipient domains
+    for (const domain of metadata.toDomains) {
+      for (const domainConfig of this.config.domainConfigs) {
+        // Check if domain matches any of the configured domains
+        if (domainConfig.domains.some(configDomain => this.domainMatches(domain, configDomain))) {
+          // Create routing from domain config
+          const routing: IRoutingDecision = {
+            id: metadata.id,
+            targetServer: domainConfig.targetIPs[0], // Use first target IP
+            port: domainConfig.port || 25,
+            useTls: domainConfig.useTls || false
+          };
+          
+          // Add authentication if specified
+          if (domainConfig.authentication) {
+            routing.authentication = domainConfig.authentication;
+          }
+          
+          // Add header modifications if specified
+          if (domainConfig.addHeaders && domainConfig.headerInfo?.length) {
+            routing.headers = domainConfig.headerInfo.map(h => ({
+              name: h.name,
+              value: h.value,
+              append: false
+            }));
+          }
+          
+          // Add DKIM signing if specified
+          if (domainConfig.signDkim && domainConfig.dkimOptions) {
+            routing.signDkim = true;
+            routing.dkimOptions = domainConfig.dkimOptions;
+          }
+          
+          return routing;
+        }
+      }
+    }
+    
+    // No match found, use default routing
+    return defaultRouting;
+  }
+  
+  /**
+   * Apply transformations to the email
+   * @param message Original parsed email
+   * @param routing Routing decision
+   * @param scanResult Scan result
+   */
+  private async applyTransformations(
+    message: ExtendedParsedMail,
+    routing: IRoutingDecision,
+    scanResult: IScanResult
+  ): Promise<ExtendedParsedMail> {
+    // Skip if no transformations configured
+    if (!this.config.transformations?.length) {
+      return message;
+    }
+    
+    // Clone the message for modifications
+    // Note: In a real implementation, we would need to properly clone the message
+    const modifiedMessage = { ...message };
+    
+    // Apply each transformation
+    for (const transformation of this.config.transformations) {
+      switch (transformation.type) {
+        case 'addHeader':
+          // Add a header to the message
+          if (transformation.header && transformation.value) {
+            // In a real implementation, we would modify the raw message headers
+            console.log(`Adding header ${transformation.header}: ${transformation.value}`);
+          }
+          break;
+          
+        case 'dkimSign':
+          // Sign the message with DKIM
+          if (routing.signDkim && routing.dkimOptions) {
+            // In a real implementation, we would use mailauth.dkimSign
+            console.log(`Signing message with DKIM for domain ${routing.dkimOptions.domainName}`);
+          }
+          break;
+      }
+    }
+    
+    return modifiedMessage;
+  }
+  
+  /**
+   * Check if a domain matches a pattern (including wildcards)
+   * @param domain Domain to check
+   * @param pattern Pattern to match against
+   */
+  private domainMatches(domain: string, pattern: string): boolean {
+    domain = domain.toLowerCase();
+    pattern = pattern.toLowerCase();
+    
+    // Exact match
+    if (domain === pattern) {
+      return true;
+    }
+    
+    // Wildcard match (*.example.com)
+    if (pattern.startsWith('*.')) {
+      const suffix = pattern.slice(2);
+      return domain.endsWith(suffix) && domain.length > suffix.length;
+    }
+    
+    return false;
+  }
+  
+  /**
+   * Update processor configuration
+   * @param config New configuration
+   */
+  public updateConfig(config: Partial<ISmtpConfig>): void {
+    this.config = {
+      ...this.config,
+      ...config
+    };
+    
+    this.emit('configUpdated', this.config);
+  }
+}

ts/dcrouter/classes.smtp.config.ts

@@ -0,0 +1,170 @@
+import * as plugins from '../plugins.js';
+
+/**
+ * Configuration for SMTP authentication
+ */
+export interface ISmtpAuthConfig {
+  /** Whether authentication is required */
+  required?: boolean;
+  /** Supported authentication methods */
+  methods?: ('PLAIN' | 'LOGIN' | 'OAUTH2')[];
+  /** Static user credentials */
+  users?: Array<{username: string, password: string}>;
+  /** LDAP URL for authentication */
+  ldapUrl?: string;
+}
+
+/**
+ * Configuration for TLS in SMTP connections
+ */
+export interface ISmtpTlsConfig {
+  /** Path to certificate file */
+  certPath?: string;
+  /** Path to key file */
+  keyPath?: string;
+  /** Path to CA certificate */
+  caPath?: string;
+  /** Minimum TLS version */
+  minVersion?: string;
+  /** Whether to use STARTTLS upgrade or implicit TLS */
+  useStartTls?: boolean;
+  /** Cipher suite for TLS */
+  ciphers?: string;
+}
+
+/**
+ * Configuration for content scanning
+ */
+export interface IContentScannerConfig {
+  /** Type of scanner */
+  type: 'spam' | 'virus' | 'attachment';
+  /** Threshold for spam detection */
+  threshold?: number;
+  /** Action to take when content matches scanning criteria */
+  action: 'tag' | 'reject';
+  /** File extensions to block (for attachment scanner) */
+  blockedExtensions?: string[];
+}
+
+/**
+ * Configuration for email transformations
+ */
+export interface ITransformationConfig {
+  /** Type of transformation */
+  type: string;
+  /** Header name for adding/modifying headers */
+  header?: string;
+  /** Header value for adding/modifying headers */
+  value?: string;
+  /** Domains for DKIM signing */
+  domains?: string[];
+  /** Whether to append to existing header or replace */
+  append?: boolean;
+  /** Additional transformation parameters */
+  [key: string]: any;
+}
+
+/**
+ * Configuration for DKIM signing
+ */
+export interface IDkimConfig {
+  /** Domain name for DKIM signature */
+  domainName: string;
+  /** Selector for DKIM */
+  keySelector: string;
+  /** Private key for DKIM signing */
+  privateKey: string;
+}
+
+/**
+ * Domain-specific routing configuration
+ */
+export interface ISmtpDomainConfig {
+  /** Domains this configuration applies to */
+  domains: string[];
+  /** Target SMTP servers for this domain */
+  targetIPs: string[];
+  /** Target port */
+  port?: number;
+  /** Whether to use TLS when connecting to target */
+  useTls?: boolean;
+  /** Authentication credentials for target server */
+  authentication?: {
+    user?: string;
+    pass?: string;
+  };
+  /** Allowed client IPs */
+  allowedIPs?: string[];
+  /** Rate limits for this domain */
+  rateLimits?: {
+    maxMessagesPerMinute?: number;
+    maxRecipientsPerMessage?: number;
+  };
+  /** Whether to add custom headers */
+  addHeaders?: boolean;
+  /** Headers to add */
+  headerInfo?: Array<{
+    name: string;
+    value: string;
+  }>;
+  /** Whether to sign emails with DKIM */
+  signDkim?: boolean;
+  /** DKIM configuration */
+  dkimOptions?: IDkimConfig;
+}
+
+/**
+ * Queue configuration
+ */
+export interface IQueueConfig {
+  /** Storage type for queue */
+  storageType?: 'memory' | 'disk';
+  /** Path for disk storage */
+  persistentPath?: string;
+  /** Maximum retry attempts */
+  maxRetries?: number;
+  /** Base delay between retries (ms) */
+  baseRetryDelay?: number;
+  /** Maximum delay between retries (ms) */
+  maxRetryDelay?: number;
+  /** Maximum queue size */
+  maxQueueSize?: number;
+}
+
+/**
+ * Complete SMTP configuration
+ */
+export interface ISmtpConfig {
+  /** SMTP ports to listen on */
+  ports: number[];
+  /** Hostname for SMTP server */
+  hostname: string;
+  /** Banner text for SMTP server */
+  banner?: string;
+  /** Maximum message size in bytes */
+  maxMessageSize?: number;
+  
+  /** TLS configuration */
+  tls?: ISmtpTlsConfig;
+  
+  /** Authentication configuration */
+  auth?: ISmtpAuthConfig;
+  
+  /** Domain-specific configurations */
+  domainConfigs: ISmtpDomainConfig[];
+  
+  /** Default routing */
+  defaultServer: string;
+  defaultPort?: number;
+  useTls?: boolean;
+  
+  /** Content scanning configuration */
+  contentScanning?: boolean;
+  scanners?: IContentScannerConfig[];
+  
+  /** Message transformations */
+  transformations?: ITransformationConfig[];
+  
+  /** Queue configuration */
+  queue?: IQueueConfig;
+}

ts/dcrouter/classes.smtp.portconfig.ts

@@ -0,0 +1,311 @@
+import * as plugins from '../plugins.js';
+
+/**
+ * Configuration options for TLS in SMTP connections
+ */
+export interface ISmtpTlsOptions {
+  /** Enable TLS for this SMTP port */
+  enabled: boolean;
+  /** Whether to use STARTTLS (upgrade plain connection) or implicit TLS */
+  useStartTls?: boolean;
+  /** Required TLS protocol version (defaults to TLSv1.2) */
+  minTlsVersion?: 'TLSv1.0' | 'TLSv1.1' | 'TLSv1.2' | 'TLSv1.3';
+  /** TLS ciphers to allow (comma-separated list) */
+  allowedCiphers?: string;
+  /** Whether to require client certificate for authentication */
+  requireClientCert?: boolean;
+  /** Whether to verify client certificate if provided */
+  verifyClientCert?: boolean;
+}
+
+/**
+ * Rate limiting options for SMTP connections
+ */
+export interface ISmtpRateLimitOptions {
+  /** Maximum connections per minute from a single IP */
+  maxConnectionsPerMinute?: number;
+  /** Maximum concurrent connections from a single IP */
+  maxConcurrentConnections?: number;
+  /** Maximum emails per minute from a single IP */
+  maxEmailsPerMinute?: number;
+  /** Maximum recipients per email */
+  maxRecipientsPerEmail?: number;
+  /** Maximum email size in bytes */
+  maxEmailSize?: number;
+  /** Action to take when rate limit is exceeded (default: 'tempfail') */
+  rateLimitAction?: 'tempfail' | 'drop' | 'delay';
+}
+
+/**
+ * Configuration for a specific SMTP port
+ */
+export interface ISmtpPortSettings {
+  /** The port number to listen on */
+  port: number;
+  /** Whether this port is enabled */
+  enabled?: boolean;
+  /** Port description (e.g., "Submission Port") */
+  description?: string;
+  /** Whether to require authentication for this port */
+  requireAuth?: boolean;
+  /** TLS options for this port */
+  tls?: ISmtpTlsOptions;
+  /** Rate limiting settings for this port */
+  rateLimit?: ISmtpRateLimitOptions;
+  /** Maximum message size in bytes for this port */
+  maxMessageSize?: number;
+  /** Whether to enable SMTP extensions like PIPELINING, 8BITMIME, etc. */
+  smtpExtensions?: {
+    /** Enable PIPELINING extension */
+    pipelining?: boolean;
+    /** Enable 8BITMIME extension */
+    eightBitMime?: boolean;
+    /** Enable SIZE extension */
+    size?: boolean;
+    /** Enable ENHANCEDSTATUSCODES extension */
+    enhancedStatusCodes?: boolean;
+    /** Enable DSN extension */
+    dsn?: boolean;
+  };
+  /** Custom SMTP greeting banner */
+  banner?: string;
+}
+
+/**
+ * Configuration manager for SMTP ports
+ */
+export class SmtpPortConfig {
+  /** Port configurations */
+  private portConfigs: Map<number, ISmtpPortSettings> = new Map();
+
+  /** Default port configurations */
+  private static readonly DEFAULT_CONFIGS: Record<number, Partial<ISmtpPortSettings>> = {
+    // Port 25: Standard SMTP
+    25: {
+      description: 'Standard SMTP',
+      requireAuth: false,
+      tls: {
+        enabled: true,
+        useStartTls: true,
+        minTlsVersion: 'TLSv1.2'
+      },
+      rateLimit: {
+        maxConnectionsPerMinute: 60,
+        maxConcurrentConnections: 10,
+        maxEmailsPerMinute: 30
+      },
+      maxMessageSize: 20 * 1024 * 1024 // 20MB
+    },
+    // Port 587: Submission
+    587: {
+      description: 'Submission Port',
+      requireAuth: true,
+      tls: {
+        enabled: true,
+        useStartTls: true,
+        minTlsVersion: 'TLSv1.2'
+      },
+      rateLimit: {
+        maxConnectionsPerMinute: 100,
+        maxConcurrentConnections: 20,
+        maxEmailsPerMinute: 60
+      },
+      maxMessageSize: 50 * 1024 * 1024 // 50MB
+    },
+    // Port 465: SMTPS (Legacy Implicit TLS)
+    465: {
+      description: 'SMTPS (Implicit TLS)',
+      requireAuth: true,
+      tls: {
+        enabled: true,
+        useStartTls: false,
+        minTlsVersion: 'TLSv1.2'
+      },
+      rateLimit: {
+        maxConnectionsPerMinute: 100,
+        maxConcurrentConnections: 20,
+        maxEmailsPerMinute: 60
+      },
+      maxMessageSize: 50 * 1024 * 1024 // 50MB
+    }
+  };
+
+  /**
+   * Create a new SmtpPortConfig
+   * @param initialConfigs Optional initial port configurations
+   */
+  constructor(initialConfigs?: ISmtpPortSettings[]) {
+    // Initialize with default configurations for standard SMTP ports
+    this.initializeDefaults();
+
+    // Apply custom configurations if provided
+    if (initialConfigs) {
+      for (const config of initialConfigs) {
+        this.setPortConfig(config);
+      }
+    }
+  }
+
+  /**
+   * Initialize port configurations with defaults
+   */
+  private initializeDefaults(): void {
+    // Set up default configurations for standard SMTP ports: 25, 587, 465
+    Object.entries(SmtpPortConfig.DEFAULT_CONFIGS).forEach(([portStr, defaults]) => {
+      const port = parseInt(portStr, 10);
+      this.portConfigs.set(port, {
+        port,
+        enabled: true,
+        ...defaults
+      });
+    });
+  }
+
+  /**
+   * Get configuration for a specific port
+   * @param port Port number
+   * @returns Port configuration or null if not found
+   */
+  public getPortConfig(port: number): ISmtpPortSettings | null {
+    return this.portConfigs.get(port) || null;
+  }
+
+  /**
+   * Get all configured ports
+   * @returns Array of port configurations
+   */
+  public getAllPortConfigs(): ISmtpPortSettings[] {
+    return Array.from(this.portConfigs.values());
+  }
+
+  /**
+   * Get only enabled port configurations
+   * @returns Array of enabled port configurations
+   */
+  public getEnabledPortConfigs(): ISmtpPortSettings[] {
+    return this.getAllPortConfigs().filter(config => config.enabled !== false);
+  }
+
+  /**
+   * Set configuration for a specific port
+   * @param config Port configuration
+   */
+  public setPortConfig(config: ISmtpPortSettings): void {
+    // Get existing config if any
+    const existingConfig = this.portConfigs.get(config.port) || { port: config.port };
+
+    // Merge with new configuration
+    this.portConfigs.set(config.port, {
+      ...existingConfig,
+      ...config
+    });
+  }
+
+  /**
+   * Remove configuration for a specific port
+   * @param port Port number
+   * @returns Whether the configuration was removed
+   */
+  public removePortConfig(port: number): boolean {
+    return this.portConfigs.delete(port);
+  }
+
+  /**
+   * Disable a specific port
+   * @param port Port number
+   * @returns Whether the port was disabled
+   */
+  public disablePort(port: number): boolean {
+    const config = this.portConfigs.get(port);
+    if (config) {
+      config.enabled = false;
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Enable a specific port
+   * @param port Port number
+   * @returns Whether the port was enabled
+   */
+  public enablePort(port: number): boolean {
+    const config = this.portConfigs.get(port);
+    if (config) {
+      config.enabled = true;
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Apply port configurations to SmartProxy settings
+   * @param smartProxy SmartProxy instance
+   */
+  public applyToSmartProxy(smartProxy: plugins.smartproxy.SmartProxy): void {
+    if (!smartProxy) return;
+
+    const enabledPorts = this.getEnabledPortConfigs();
+    const settings = smartProxy.settings;
+
+    // Initialize globalPortRanges if needed
+    if (!settings.globalPortRanges) {
+      settings.globalPortRanges = [];
+    }
+
+    // Add configured ports to globalPortRanges
+    for (const portConfig of enabledPorts) {
+      // Add port to global port ranges if not already present
+      if (!settings.globalPortRanges.some((r) => r.from <= portConfig.port && portConfig.port <= r.to)) {
+        settings.globalPortRanges.push({ from: portConfig.port, to: portConfig.port });
+      }
+      
+      // Apply TLS settings at SmartProxy level
+      if (portConfig.port === 465 && portConfig.tls?.enabled) {
+        // For implicit TLS on port 465
+        settings.sniEnabled = true;
+      }
+    }
+
+    // Group ports by TLS configuration to log them
+    const starttlsPorts = enabledPorts
+      .filter(p => p.tls?.enabled && p.tls?.useStartTls)
+      .map(p => p.port);
+
+    const implicitTlsPorts = enabledPorts
+      .filter(p => p.tls?.enabled && !p.tls?.useStartTls)
+      .map(p => p.port);
+
+    const nonTlsPorts = enabledPorts
+      .filter(p => !p.tls?.enabled)
+      .map(p => p.port);
+
+    if (starttlsPorts.length > 0) {
+      console.log(`Configured STARTTLS SMTP ports: ${starttlsPorts.join(', ')}`);
+    }
+
+    if (implicitTlsPorts.length > 0) {
+      console.log(`Configured Implicit TLS SMTP ports: ${implicitTlsPorts.join(', ')}`);
+    }
+
+    if (nonTlsPorts.length > 0) {
+      console.log(`Configured Plain SMTP ports: ${nonTlsPorts.join(', ')}`);
+    }
+
+    // Setup connection listeners for different port types
+    smartProxy.on('connection', (connection) => {
+      const port = connection.localPort;
+      
+      // Check which type of port this is
+      if (implicitTlsPorts.includes(port)) {
+        console.log(`Implicit TLS SMTP connection on port ${port} from ${connection.remoteIP}`);
+      } else if (starttlsPorts.includes(port)) {
+        console.log(`STARTTLS SMTP connection on port ${port} from ${connection.remoteIP}`);
+      } else if (nonTlsPorts.includes(port)) {
+        console.log(`Plain SMTP connection on port ${port} from ${connection.remoteIP}`);
+      }
+    });
+
+    console.log(`Applied SMTP port configurations to SmartProxy: ${enabledPorts.map(p => p.port).join(', ')}`);
+  }
+}

ts/dcrouter/classes.smtp.server.ts

@@ -0,0 +1,423 @@
+import * as plugins from '../plugins.js';
+import { Readable } from 'node:stream';
+import type { ISmtpConfig, ISmtpAuthConfig } from './classes.smtp.config.js';
+import { EventEmitter } from 'node:events';
+
+/**
+ * Connection session information
+ */
+export interface ISmtpSession {
+  id: string;
+  remoteAddress: string;
+  remotePort: number;
+  clientHostname?: string;
+  secure: boolean;
+  transmissionType?: 'SMTP' | 'ESMTP';
+  user?: {
+    username: string;
+    [key: string]: any;
+  };
+  envelope?: {
+    mailFrom: {
+      address: string;
+      args: any;
+    };
+    rcptTo: Array<{
+      address: string;
+      args: any;
+    }>;
+  };
+}
+
+/**
+ * Authentication data
+ */
+export interface IAuthData {
+  method: string;
+  username: string;
+  password: string;
+}
+
+/**
+ * SMTP Server class for receiving emails
+ */
+export class SmtpServer extends EventEmitter {
+  private config: ISmtpConfig;
+  private server: any; // Will be SMTPServer from smtp-server once we add the dependency
+  private incomingConnections: Map<string, ISmtpSession> = new Map();
+  
+  /**
+   * Create a new SMTP server
+   * @param config SMTP server configuration
+   */
+  constructor(config: ISmtpConfig) {
+    super();
+    this.config = config;
+  }
+  
+  /**
+   * Initialize and start the SMTP server
+   */
+  public async start(): Promise<void> {
+    try {
+      // This is a placeholder for the actual server creation
+      // In the real implementation, we would use the smtp-server package
+      console.log(`Starting SMTP server on ports ${this.config.ports.join(', ')}`);
+      
+      // Setup TLS options if provided
+      const tlsOptions = this.config.tls ? {
+        key: this.config.tls.keyPath ? await plugins.fs.promises.readFile(this.config.tls.keyPath, 'utf8') : undefined,
+        cert: this.config.tls.certPath ? await plugins.fs.promises.readFile(this.config.tls.certPath, 'utf8') : undefined,
+        ca: this.config.tls.caPath ? await plugins.fs.promises.readFile(this.config.tls.caPath, 'utf8') : undefined,
+        minVersion: this.config.tls.minVersion || 'TLSv1.2',
+        ciphers: this.config.tls.ciphers
+      } : undefined;
+      
+      // Create the server
+      // Note: In the actual implementation, this would use SMTPServer from smtp-server
+      this.server = {
+        // Placeholder for server instance
+        async close() {
+          console.log('SMTP server closed');
+        }
+      };
+      
+      // Set up event handlers
+      this.setupEventHandlers();
+      
+      // Listen on all specified ports
+      for (const port of this.config.ports) {
+        // In actual implementation, this would call server.listen(port)
+        console.log(`SMTP server listening on port ${port}`);
+      }
+      
+      this.emit('started');
+    } catch (error) {
+      console.error('Failed to start SMTP server:', error);
+      throw error;
+    }
+  }
+  
+  /**
+   * Stop the SMTP server
+   */
+  public async stop(): Promise<void> {
+    try {
+      if (this.server) {
+        // Close the server
+        await this.server.close();
+        this.server = null;
+        
+        // Clear connection tracking
+        this.incomingConnections.clear();
+        
+        this.emit('stopped');
+      }
+    } catch (error) {
+      console.error('Error stopping SMTP server:', error);
+      throw error;
+    }
+  }
+  
+  /**
+   * Set up event handlers for the SMTP server
+   */
+  private setupEventHandlers(): void {
+    // These would be connected to actual server events in implementation
+    
+    // Connection handler
+    this.onConnect((session, callback) => {
+      // Store connection in tracking map
+      this.incomingConnections.set(session.id, session);
+      
+      // Check if connection is allowed based on IP
+      if (!this.isIpAllowed(session.remoteAddress)) {
+        return callback(new Error('Connection refused'));
+      }
+      
+      // Accept the connection
+      callback();
+    });
+    
+    // Authentication handler
+    this.onAuth((auth, session, callback) => {
+      // Skip auth check if not required
+      if (!this.config.auth?.required) {
+        return callback(null, { user: auth.username });
+      }
+      
+      // Check authentication
+      if (this.authenticateUser(auth)) {
+        return callback(null, { user: auth.username });
+      }
+      
+      // Authentication failed
+      callback(new Error('Invalid credentials'));
+    });
+    
+    // Sender validation
+    this.onMailFrom((address, session, callback) => {
+      // Validate sender address if needed
+      // Accept the sender
+      callback();
+    });
+    
+    // Recipient validation
+    this.onRcptTo((address, session, callback) => {
+      // Validate recipient address
+      // Check if we handle this domain
+      if (!this.isDomainHandled(address.address.split('@')[1])) {
+        return callback(new Error('Domain not handled by this server'));
+      }
+      
+      // Accept the recipient
+      callback();
+    });
+    
+    // Message data handler
+    this.onData((stream, session, callback) => {
+      // Process the incoming message
+      this.processMessageData(stream, session)
+        .then(() => callback())
+        .catch(err => callback(err));
+    });
+  }
+  
+  /**
+   * Process incoming message data
+   * @param stream Message data stream
+   * @param session SMTP session
+   */
+  private async processMessageData(stream: Readable, session: ISmtpSession): Promise<void> {
+    return new Promise<void>((resolve, reject) => {
+      // Collect the message data
+      let messageData = '';
+      let messageSize = 0;
+      
+      stream.on('data', (chunk) => {
+        messageData += chunk;
+        messageSize += chunk.length;
+        
+        // Check size limits
+        if (this.config.maxMessageSize && messageSize > this.config.maxMessageSize) {
+          stream.unpipe();
+          return reject(new Error('Message size exceeds limit'));
+        }
+      });
+      
+      stream.on('end', async () => {
+        try {
+          // Parse the email using mailparser
+          const parsedMail = await this.parseEmail(messageData);
+          
+          // Emit message received event
+          this.emit('message', {
+            session,
+            mail: parsedMail,
+            rawData: messageData
+          });
+          
+          resolve();
+        } catch (error) {
+          reject(error);
+        }
+      });
+      
+      stream.on('error', (error) => {
+        reject(error);
+      });
+    });
+  }
+  
+  /**
+   * Parse raw email data using mailparser
+   * @param rawData Raw email data
+   */
+  private async parseEmail(rawData: string): Promise<any> {
+    // Use mailparser to parse the email
+    // We return 'any' here which will be treated as ExtendedParsedMail by consumers
+    return plugins.mailparser.simpleParser(rawData);
+  }
+  
+  /**
+   * Check if an IP address is allowed to connect
+   * @param ip IP address
+   */
+  private isIpAllowed(ip: string): boolean {
+    // Default to allowing all IPs if no restrictions
+    const defaultAllowed = ['0.0.0.0/0'];
+    
+    // Check domain configs for IP restrictions
+    for (const domainConfig of this.config.domainConfigs) {
+      if (domainConfig.allowedIPs && domainConfig.allowedIPs.length > 0) {
+        // Check if IP matches any of the allowed IPs
+        for (const allowedIp of domainConfig.allowedIPs) {
+          if (this.ipMatchesRange(ip, allowedIp)) {
+            return true;
+          }
+        }
+      }
+    }
+    
+    // Check against default allowed IPs
+    for (const allowedIp of defaultAllowed) {
+      if (this.ipMatchesRange(ip, allowedIp)) {
+        return true;
+      }
+    }
+    
+    return false;
+  }
+  
+  /**
+   * Check if an IP matches a range
+   * @param ip IP address to check
+   * @param range IP range in CIDR notation
+   */
+  private ipMatchesRange(ip: string, range: string): boolean {
+    try {
+      // Use the 'ip' package to check if IP is in range
+      return plugins.ip.cidrSubnet(range).contains(ip);
+    } catch (error) {
+      console.error(`Invalid IP range: ${range}`, error);
+      return false;
+    }
+  }
+  
+  /**
+   * Check if a domain is handled by this server
+   * @param domain Domain to check
+   */
+  private isDomainHandled(domain: string): boolean {
+    // Check if the domain is configured in any domain config
+    for (const domainConfig of this.config.domainConfigs) {
+      for (const configDomain of domainConfig.domains) {
+        if (this.domainMatches(domain, configDomain)) {
+          return true;
+        }
+      }
+    }
+    return false;
+  }
+  
+  /**
+   * Check if a domain matches a pattern (including wildcards)
+   * @param domain Domain to check
+   * @param pattern Pattern to match against
+   */
+  private domainMatches(domain: string, pattern: string): boolean {
+    domain = domain.toLowerCase();
+    pattern = pattern.toLowerCase();
+    
+    // Exact match
+    if (domain === pattern) {
+      return true;
+    }
+    
+    // Wildcard match (*.example.com)
+    if (pattern.startsWith('*.')) {
+      const suffix = pattern.slice(2);
+      return domain.endsWith(suffix) && domain.length > suffix.length;
+    }
+    
+    return false;
+  }
+  
+  /**
+   * Authenticate a user
+   * @param auth Authentication data
+   */
+  private authenticateUser(auth: IAuthData): boolean {
+    // Skip if no auth config
+    if (!this.config.auth) {
+      return true;
+    }
+    
+    // Check if auth method is supported
+    if (this.config.auth.methods && !this.config.auth.methods.includes(auth.method as any)) {
+      return false;
+    }
+    
+    // Check static user credentials
+    if (this.config.auth.users) {
+      const user = this.config.auth.users.find(u => 
+        u.username === auth.username && u.password === auth.password);
+      if (user) {
+        return true;
+      }
+    }
+    
+    // LDAP authentication would go here
+    
+    return false;
+  }
+  
+  /**
+   * Event handler for connection
+   * @param handler Function to handle connection
+   */
+  public onConnect(handler: (session: ISmtpSession, callback: (err?: Error) => void) => void): void {
+    // In actual implementation, this would connect to the server's 'connection' event
+    this.on('connect', handler);
+  }
+  
+  /**
+   * Event handler for authentication
+   * @param handler Function to handle authentication
+   */
+  public onAuth(handler: (auth: IAuthData, session: ISmtpSession, callback: (err?: Error, user?: any) => void) => void): void {
+    // In actual implementation, this would connect to the server's 'auth' event
+    this.on('auth', handler);
+  }
+  
+  /**
+   * Event handler for MAIL FROM command
+   * @param handler Function to handle MAIL FROM
+   */
+  public onMailFrom(handler: (address: { address: string; args: any }, session: ISmtpSession, callback: (err?: Error) => void) => void): void {
+    // In actual implementation, this would connect to the server's 'mail' event
+    this.on('mail', handler);
+  }
+  
+  /**
+   * Event handler for RCPT TO command
+   * @param handler Function to handle RCPT TO
+   */
+  public onRcptTo(handler: (address: { address: string; args: any }, session: ISmtpSession, callback: (err?: Error) => void) => void): void {
+    // In actual implementation, this would connect to the server's 'rcpt' event
+    this.on('rcpt', handler);
+  }
+  
+  /**
+   * Event handler for DATA command
+   * @param handler Function to handle DATA
+   */
+  public onData(handler: (stream: Readable, session: ISmtpSession, callback: (err?: Error) => void) => void): void {
+    // In actual implementation, this would connect to the server's 'data' event
+    this.on('dataReady', handler);
+  }
+  
+  /**
+   * Update the server configuration
+   * @param config New configuration
+   */
+  public updateConfig(config: Partial<ISmtpConfig>): void {
+    this.config = {
+      ...this.config,
+      ...config
+    };
+    
+    // In a real implementation, this might require restarting the server
+    this.emit('configUpdated', this.config);
+  }
+  
+  /**
+   * Get server statistics
+   */
+  public getStats(): any {
+    return {
+      connections: this.incomingConnections.size,
+      // Additional stats would be included here
+    };
+  }
+}

ts/dcrouter/index.ts

@@ -1 +1,11 @@
+// Core DcRouter components
 export * from './classes.dcrouter.js';
+export * from './classes.smtp.portconfig.js';
+export * from './classes.email.domainrouter.js';
+
+// SMTP Store-and-Forward components
+export * from './classes.smtp.config.js';
+export * from './classes.smtp.server.js';
+export * from './classes.email.processor.js';
+export * from './classes.delivery.queue.js';
+export * from './classes.delivery.system.js';

ts_web/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@serve.zone/platformservice',
-  version: '2.4.2',
+  version: '2.6.0',
   description: 'A multifaceted platform service handling mail, SMS, letter delivery, and AI services.'
 }