366 lines
30 KiB
JavaScript
366 lines
30 KiB
JavaScript
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import * as plugins from '../../plugins.js';
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import * as paths from '../../paths.js';
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import { Email } from '../core/classes.email.js';
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import { EmailSignJob } from './classes.emailsignjob.js';
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// Email delivery status
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export var DeliveryStatus;
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(function (DeliveryStatus) {
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DeliveryStatus["PENDING"] = "pending";
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DeliveryStatus["SENDING"] = "sending";
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DeliveryStatus["DELIVERED"] = "delivered";
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DeliveryStatus["FAILED"] = "failed";
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DeliveryStatus["DEFERRED"] = "deferred"; // Temporary failure, will retry
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})(DeliveryStatus || (DeliveryStatus = {}));
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export class EmailSendJob {
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emailServerRef;
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email;
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mxServers = [];
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currentMxIndex = 0;
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options;
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deliveryInfo;
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constructor(emailServerRef, emailArg, options = {}) {
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this.email = emailArg;
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this.emailServerRef = emailServerRef;
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// Set default options
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this.options = {
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maxRetries: options.maxRetries || 3,
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retryDelay: options.retryDelay || 30000, // 30 seconds
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connectionTimeout: options.connectionTimeout || 60000, // 60 seconds
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tlsOptions: options.tlsOptions || {},
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debugMode: options.debugMode || false
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};
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// Initialize delivery info
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this.deliveryInfo = {
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status: DeliveryStatus.PENDING,
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attempts: 0,
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logs: []
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};
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}
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/**
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* Send the email to its recipients
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*/
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async send() {
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try {
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// Check if the email is valid before attempting to send
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this.validateEmail();
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// Resolve MX records for the recipient domain
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await this.resolveMxRecords();
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// Try to send the email
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return await this.attemptDelivery();
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}
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catch (error) {
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this.log(`Critical error in send process: ${error.message}`);
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this.deliveryInfo.status = DeliveryStatus.FAILED;
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this.deliveryInfo.error = error;
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// Save failed email for potential future retry or analysis
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await this.saveFailed();
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return DeliveryStatus.FAILED;
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}
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}
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/**
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* Validate the email before sending
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*/
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validateEmail() {
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if (!this.email.to || this.email.to.length === 0) {
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throw new Error('No recipients specified');
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}
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if (!this.email.from) {
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throw new Error('No sender specified');
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}
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const fromDomain = this.email.getFromDomain();
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if (!fromDomain) {
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throw new Error('Invalid sender domain');
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}
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}
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/**
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* Resolve MX records for the recipient domain
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*/
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async resolveMxRecords() {
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const domain = this.email.getPrimaryRecipient()?.split('@')[1];
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if (!domain) {
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throw new Error('Invalid recipient domain');
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}
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this.log(`Resolving MX records for domain: ${domain}`);
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try {
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const addresses = await this.resolveMx(domain);
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// Sort by priority (lowest number = highest priority)
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addresses.sort((a, b) => a.priority - b.priority);
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this.mxServers = addresses.map(mx => mx.exchange);
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this.log(`Found ${this.mxServers.length} MX servers: ${this.mxServers.join(', ')}`);
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if (this.mxServers.length === 0) {
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throw new Error(`No MX records found for domain: ${domain}`);
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}
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}
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catch (error) {
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this.log(`Failed to resolve MX records: ${error.message}`);
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throw new Error(`MX lookup failed for ${domain}: ${error.message}`);
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}
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}
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/**
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* Attempt to deliver the email with retries
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*/
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async attemptDelivery() {
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while (this.deliveryInfo.attempts < this.options.maxRetries) {
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this.deliveryInfo.attempts++;
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this.deliveryInfo.lastAttempt = new Date();
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this.deliveryInfo.status = DeliveryStatus.SENDING;
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try {
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this.log(`Delivery attempt ${this.deliveryInfo.attempts} of ${this.options.maxRetries}`);
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// Try each MX server in order of priority
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while (this.currentMxIndex < this.mxServers.length) {
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const currentMx = this.mxServers[this.currentMxIndex];
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this.deliveryInfo.mxServer = currentMx;
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try {
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this.log(`Attempting delivery to MX server: ${currentMx}`);
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await this.connectAndSend(currentMx);
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// If we get here, email was sent successfully
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this.deliveryInfo.status = DeliveryStatus.DELIVERED;
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this.deliveryInfo.deliveryTime = new Date();
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this.log(`Email delivered successfully to ${currentMx}`);
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// Record delivery for sender reputation monitoring
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this.recordDeliveryEvent('delivered');
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// Save successful email record
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await this.saveSuccess();
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return DeliveryStatus.DELIVERED;
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}
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catch (error) {
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this.log(`Failed to deliver to ${currentMx}: ${error.message}`);
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this.currentMxIndex++;
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// If this MX server failed, try the next one
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if (this.currentMxIndex >= this.mxServers.length) {
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throw error; // No more MX servers to try
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}
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}
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}
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throw new Error('All MX servers failed');
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}
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catch (error) {
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this.deliveryInfo.error = error;
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// Check if this is a permanent failure
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if (this.isPermanentFailure(error)) {
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this.log('Permanent failure detected, not retrying');
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this.deliveryInfo.status = DeliveryStatus.FAILED;
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// Record permanent failure for bounce management
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this.recordDeliveryEvent('bounced', true);
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await this.saveFailed();
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return DeliveryStatus.FAILED;
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}
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// This is a temporary failure
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if (this.deliveryInfo.attempts < this.options.maxRetries) {
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this.log(`Temporary failure, will retry in ${this.options.retryDelay}ms`);
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this.deliveryInfo.status = DeliveryStatus.DEFERRED;
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this.deliveryInfo.nextAttempt = new Date(Date.now() + this.options.retryDelay);
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// Record temporary failure for monitoring
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this.recordDeliveryEvent('deferred');
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// Reset MX server index for next retry
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this.currentMxIndex = 0;
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// Wait before retrying
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await this.delay(this.options.retryDelay);
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}
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}
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}
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// If we get here, all retries failed
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this.deliveryInfo.status = DeliveryStatus.FAILED;
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await this.saveFailed();
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return DeliveryStatus.FAILED;
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}
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/**
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* Connect to a specific MX server and send the email using SmtpClient
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*/
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async connectAndSend(mxServer) {
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this.log(`Connecting to ${mxServer}:25`);
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try {
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// Check if IP warmup is enabled and get an IP to use
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let localAddress = undefined;
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try {
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const fromDomain = this.email.getFromDomain();
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const bestIP = this.emailServerRef.getBestIPForSending({
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from: this.email.from,
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to: this.email.getAllRecipients(),
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domain: fromDomain,
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isTransactional: this.email.priority === 'high'
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});
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if (bestIP) {
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this.log(`Using warmed-up IP ${bestIP} for sending`);
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localAddress = bestIP;
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// Record the send for warm-up tracking
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this.emailServerRef.recordIPSend(bestIP);
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}
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}
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catch (error) {
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this.log(`Error selecting IP address: ${error.message}`);
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}
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// Get SMTP client from UnifiedEmailServer
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const smtpClient = this.emailServerRef.getSmtpClient(mxServer, 25);
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// Sign the email with DKIM if available
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let signedEmail = this.email;
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try {
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const fromDomain = this.email.getFromDomain();
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if (fromDomain && this.emailServerRef.hasDkimKey(fromDomain)) {
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// Convert email to RFC822 format for signing
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const emailMessage = this.email.toRFC822String();
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// Create sign job with proper options
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const emailSignJob = new EmailSignJob(this.emailServerRef, {
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domain: fromDomain,
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selector: 'default', // Using default selector
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headers: {}, // Headers will be extracted from emailMessage
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body: emailMessage
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});
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// Get the DKIM signature header
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const signatureHeader = await emailSignJob.getSignatureHeader(emailMessage);
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// Add the signature to the email
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if (signatureHeader) {
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// For now, we'll use the email as-is since SmtpClient will handle DKIM
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this.log(`Email ready for DKIM signing for domain: ${fromDomain}`);
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}
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}
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}
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catch (error) {
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this.log(`Failed to prepare DKIM: ${error.message}`);
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}
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// Send the email using SmtpClient
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const result = await smtpClient.sendMail(signedEmail);
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if (result.success) {
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this.log(`Email sent successfully: ${result.response}`);
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// Record the send for reputation monitoring
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this.recordDeliveryEvent('delivered');
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}
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else {
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throw new Error(result.error?.message || 'Failed to send email');
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}
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}
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catch (error) {
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this.log(`Failed to send email via ${mxServer}: ${error.message}`);
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throw error;
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}
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}
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/**
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* Record delivery event for monitoring
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*/
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recordDeliveryEvent(eventType, isHardBounce = false) {
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try {
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const domain = this.email.getFromDomain();
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if (domain) {
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if (eventType === 'delivered') {
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this.emailServerRef.recordDelivery(domain);
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}
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else if (eventType === 'bounced') {
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// Get the receiving domain for bounce recording
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let receivingDomain = null;
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const primaryRecipient = this.email.getPrimaryRecipient();
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if (primaryRecipient) {
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receivingDomain = primaryRecipient.split('@')[1];
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}
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if (receivingDomain) {
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this.emailServerRef.recordBounce(domain, receivingDomain, isHardBounce ? 'hard' : 'soft', this.deliveryInfo.error?.message || 'Unknown error');
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}
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}
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}
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}
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catch (error) {
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this.log(`Failed to record delivery event: ${error.message}`);
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}
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}
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/**
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* Check if an error represents a permanent failure
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*/
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isPermanentFailure(error) {
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const permanentFailurePatterns = [
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'User unknown',
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'No such user',
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'Mailbox not found',
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'Invalid recipient',
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'Account disabled',
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'Account suspended',
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'Domain not found',
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'No such domain',
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'Invalid domain',
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'Relay access denied',
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'Access denied',
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'Blacklisted',
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'Blocked',
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'550', // Permanent failure SMTP code
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'551',
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'552',
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'553',
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'554'
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];
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const errorMessage = error.message.toLowerCase();
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return permanentFailurePatterns.some(pattern => errorMessage.includes(pattern.toLowerCase()));
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}
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/**
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* Resolve MX records for a domain
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*/
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resolveMx(domain) {
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return new Promise((resolve, reject) => {
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plugins.dns.resolveMx(domain, (err, addresses) => {
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if (err) {
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reject(err);
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}
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else {
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resolve(addresses || []);
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}
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});
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});
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}
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/**
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* Log a message with timestamp
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*/
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log(message) {
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const timestamp = new Date().toISOString();
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const logEntry = `[${timestamp}] ${message}`;
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this.deliveryInfo.logs.push(logEntry);
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if (this.options.debugMode) {
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console.log(`[EmailSendJob] ${logEntry}`);
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}
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}
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/**
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* Save successful email to storage
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*/
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async saveSuccess() {
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try {
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// Use the existing email storage path
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const emailContent = this.email.toRFC822String();
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const fileName = `${Date.now()}_${this.email.from}_to_${this.email.to[0]}_success.eml`;
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const filePath = plugins.path.join(paths.sentEmailsDir, fileName);
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await plugins.smartfs.directory(paths.sentEmailsDir).recursive().create();
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await plugins.smartfs.file(filePath).write(emailContent);
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// Also save delivery info
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const infoFileName = `${Date.now()}_${this.email.from}_to_${this.email.to[0]}_info.json`;
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const infoPath = plugins.path.join(paths.sentEmailsDir, infoFileName);
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await plugins.smartfs.file(infoPath).write(JSON.stringify(this.deliveryInfo, null, 2));
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this.log(`Email saved to ${fileName}`);
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}
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catch (error) {
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this.log(`Failed to save email: ${error.message}`);
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}
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}
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/**
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* Save failed email to storage
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*/
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async saveFailed() {
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try {
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// Use the existing email storage path
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const emailContent = this.email.toRFC822String();
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const fileName = `${Date.now()}_${this.email.from}_to_${this.email.to[0]}_failed.eml`;
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const filePath = plugins.path.join(paths.failedEmailsDir, fileName);
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await plugins.smartfs.directory(paths.failedEmailsDir).recursive().create();
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await plugins.smartfs.file(filePath).write(emailContent);
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// Also save delivery info with error details
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const infoFileName = `${Date.now()}_${this.email.from}_to_${this.email.to[0]}_error.json`;
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const infoPath = plugins.path.join(paths.failedEmailsDir, infoFileName);
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await plugins.smartfs.file(infoPath).write(JSON.stringify(this.deliveryInfo, null, 2));
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this.log(`Failed email saved to ${fileName}`);
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}
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catch (error) {
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this.log(`Failed to save failed email: ${error.message}`);
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}
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}
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/**
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* Delay for specified milliseconds
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*/
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delay(ms) {
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return new Promise(resolve => setTimeout(resolve, ms));
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}
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}
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