Files
smartmta/dist_ts/mail/delivery/classes.emailsendjob.js
2026-02-10 15:54:09 +00:00

366 lines
30 KiB
JavaScript

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