BREAKING CHANGE(security): implement resilience and lifecycle management for RustSecurityBridge (auto-restart, health checks, state machine and eventing); remove legacy TS SMTP test helper and DNSManager; remove deliverability IP-warmup/sender-reputation integrations and related types; drop unused dependencies

ts/mail/delivery/classes.emailsendjob.ts

@@ -225,28 +225,6 @@ export class EmailSendJob {
     this.log(`Connecting to ${mxServer}:25`);
     
     try {
-      // Check if IP warmup is enabled and get an IP to use
-      let localAddress: string | undefined = undefined;
-      try {
-        const fromDomain = this.email.getFromDomain();
-        const bestIP = this.emailServerRef.getBestIPForSending({
-          from: this.email.from,
-          to: this.email.getAllRecipients(),
-          domain: fromDomain,
-          isTransactional: this.email.priority === 'high'
-        });
-        
-        if (bestIP) {
-          this.log(`Using warmed-up IP ${bestIP} for sending`);
-          localAddress = bestIP;
-          
-          // Record the send for warm-up tracking
-          this.emailServerRef.recordIPSend(bestIP);
-        }
-      } catch (error) {
-        this.log(`Error selecting IP address: ${error.message}`);
-      }
-      
       // Get SMTP client from UnifiedEmailServer
       const smtpClient = this.emailServerRef.getSmtpClient(mxServer, 25);
       

ts/mail/delivery/interfaces.ts

@@ -2,8 +2,6 @@
  * SMTP and email delivery interface definitions
  */
 
-import type { Email } from '../core/classes.email.js';
-
 /**
  * SMTP session state enumeration
  */
@@ -167,125 +165,3 @@ export interface ISmtpAuth {
   password: string;
 }
 
-/**
- * SMTP server options
- */
-export interface ISmtpServerOptions {
-  /**
-   * Port to listen on
-   */
-  port: number;
-  
-  /**
-   * TLS private key (PEM format)
-   */
-  key: string;
-  
-  /**
-   * TLS certificate (PEM format)
-   */
-  cert: string;
-  
-  /**
-   * Server hostname for SMTP banner
-   */
-  hostname?: string;
-  
-  /**
-   * Host address to bind to (defaults to all interfaces)
-   */
-  host?: string;
-  
-  /**
-   * Secure port for dedicated TLS connections
-   */
-  securePort?: number;
-  
-  /**
-   * CA certificates for TLS (PEM format)
-   */
-  ca?: string;
-  
-  /**
-   * Maximum size of messages in bytes
-   */
-  maxSize?: number;
-  
-  /**
-   * Maximum number of concurrent connections
-   */
-  maxConnections?: number;
-  
-  /**
-   * Authentication options
-   */
-  auth?: {
-    /**
-     * Whether authentication is required
-     */
-    required: boolean;
-    
-    /**
-     * Allowed authentication methods
-     */
-    methods: ('PLAIN' | 'LOGIN' | 'OAUTH2')[];
-  };
-  
-  /**
-   * Socket timeout in milliseconds (default: 5 minutes / 300000ms)
-   */
-  socketTimeout?: number;
-  
-  /**
-   * Initial connection timeout in milliseconds (default: 30 seconds / 30000ms)
-   */
-  connectionTimeout?: number;
-  
-  /**
-   * Interval for checking idle sessions in milliseconds (default: 5 seconds / 5000ms)
-   * For testing, can be set lower (e.g. 1000ms) to detect timeouts more quickly
-   */
-  cleanupInterval?: number;
-  
-  /**
-   * Maximum number of recipients allowed per message (default: 100)
-   */
-  maxRecipients?: number;
-  
-  /**
-   * Maximum message size in bytes (default: 10MB / 10485760 bytes)
-   * This is advertised in the EHLO SIZE extension
-   */
-  size?: number;
-  
-  /**
-   * Timeout for the DATA command in milliseconds (default: 60000ms / 1 minute)
-   * This controls how long to wait for the complete email data
-   */
-  dataTimeout?: number;
-}
-
-/**
- * Result of SMTP transaction
- */
-export interface ISmtpTransactionResult {
-  /**
-   * Whether the transaction was successful
-   */
-  success: boolean;
-  
-  /**
-   * Error message if failed
-   */
-  error?: string;
-  
-  /**
-   * Message ID if successful
-   */
-  messageId?: string;
-  
-  /**
-   * Resulting email if successful
-   */
-  email?: Email;
-}