Simple SMTP server module to create custom SMTP servers. 

Simple SMTP server module to create custom SMTP servers

andris

simplesmtp

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  * ignore close if end was already called [004ebaee]

  * Changed formatting rules, use single quotes instead of double quotes [92b581c8]

  * get tests running in node 0.8, 0.10, 0.11 [9b3f9043..833388d5]

  * Server: Added support for XOAUTH2 authentication [87b6ed66]

  * Client: Use interval NOOPing to keep the connection up [184d8623]

  * Client: do not throw if recipients are note set [785a2b09]

  * disabled server test for max incoming connections [476f8cf5]

  * Added socketTimeout option [b83a4838]

  * Added test for empty MAIL FROM [7f17174d]

  * Allow null return sender in mail command (coxeh) [08bc6a6f]

  * incorrect mail format fix (siterra) [d42d364e]

  * support for `form` and `to` structure: {address:"...",name:"..."} siterra) [2b054740]

  * Improved auth supports detection (finian) [863dc019]

  * Fixed a Buffer building bug (finian) [6dc9a4e2]

  * Rename disableDotEscaping to enableDotEscaping [5534bd85]

  * Ignore OAuth2 errors from destroyed connections (SLaks) [e8ff3356]

  * Emit error on unexpected close [111da167]

  * Allowed persistence of custom properties when resetting envelope state. (garbetjie) [b49b7ead]

  * Ignore OAuth errors from destroyed connections (SLaks) [d50a7571]

  * Re-emit 'drain' from tcp socket [5bfb1fcc]

  * Prefer setImmediate over nextTick if available [f53e2d44]

  * Server: Implemented "NOOP" command (codingphil) [707485c0]

  * Server: Allow SIZE with MAIL [3b404028]

  * Added limiting of max client connections (garbetjie) [bcd5c0b3]

  * Do not create a server instance with invalid socket (47d17420)

  * Only emit rcptFailed if there actually was an address that was rejected [4c75523f]

  * Expose simplesmtp version number [c2382203]

  * Fix typo in README.md (Meekohi) [597a25cb]

module.exports = function(port, host, options) {

    var connection = new SMTPClient(port, host, options);

    if (typeof setImmediate == 'function') {

        setImmediate(connection.connect.bind(connection));

        process.nextTick(connection.connect.bind(connection));

* Generates a SMTP connection object

* Optional options object takes the following possible properties:

* <li>secureConnection - use SSL</li>

* <li>name - the name of the client server</li>

* <li>auth - authentication object <code>{user:'...', pass:'...'}</code>

* <li>ignoreTLS - ignore server support for STARTTLS</li>

* <li>tls - options for createCredentials</li>

* <li>debug - output client and server messages to console</li>

* <li>logFile - output client and server messages to file</li>

* <li>instanceId - unique instance id for debugging</li>

* <li>localAddress - outbound address to bind to (see: http://nodejs.org/api/net.html#net_net_connect_options_connectionlistener)</li>

* <li>greetingTimeout - Time to wait in ms until greeting message is received from the server (defaults to 10000)</li>

* <li>socketTimeout - Time of inactivity until the connection is closed (defaults to 1 hour)</li>

 * @param {Number} [port=25] Port number to connect to

 * @param {String} [host='localhost'] Hostname to connect to

 * @param {Object} [options] Option properties

function SMTPClient(port, host, options) {

    this.port = port || (this.options.secureConnection ? 465 : 25);

    this.options.secureConnection = !! this.options.secureConnection;

    this.options.auth = this.options.auth || false;

    this.options.maxConnections = this.options.maxConnections || 5;

    this.options.enableDotEscaping = this.options.enableDotEscaping || false;

        // defaul hostname is machine hostname or [IP]

        var defaultHostname = (oslib.hostname && oslib.hostname()) || '';

if (defaultHostname.indexOf('.') < 0) {

            defaultHostname = '[127.0.0.1]';

        if (defaultHostname.match(/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/)) {

            defaultHostname = '[' + defaultHostname + ']';

        this.options.name = defaultHostname;

SMTPClient.prototype._init = function() {

     * Defines if the current connection is secure or not. If not,

     * Ignore incoming data on TLS negotiation

    // keep the error handler around, just in case

    this.socket.on('error', this._onError.bind(this));

* 'data' listener for data coming from the server

 * @param {Buffer} chunk Data chunk coming from the server

SMTPClient.prototype._onData = function(chunk) {

    if (this._ignoreData || !chunk || !chunk.length) {

    if (chunk.readUInt8(chunk.length - 1) != 0x0A) {

        this._remainder += chunk.toString();

        str = (this._remainder + chunk.toString()).trim();

    // if this is a multi line reply, wait until the ending

    if (str.match(/(?:^|\n)\d{3}-.+$/)) {

        console.log('SERVER' + (this.options.instanceId ? ' ' +

            this.options.instanceId : '') + ':\n└──' + str.replace(/\r?\n/g, '\n   '));

        this.log('SERVER' + (this.options.instanceId ? ' ' +

    if (typeof this._currentAction == 'function') {

        this._currentAction.call(this, str);

* 'error' listener for the socket

SMTPClient.prototype._onError = function(err, type, data) {

* 'drain' listener for the socket

SMTPClient.prototype._onDrain = function() {

* 'close' listener for the socket

SMTPClient.prototype._onClose = function() {

if ([this._actionGreeting, this._actionIdle, this.close].indexOf(this._currentAction) < 0 && !this._destroyed) {

        return this._onError(new Error('Connection closed unexpectedly'));

SMTPClient.prototype._onEnd = function() {

* 'timeout' listener for the socket

 * @fileOverview This is the main file for the simplesmtp library to create custom SMTP servers

* @author <a href='mailto:andris@node.ee'>Andris Reinman</a>

var RAIServer = require('rai').RAIServer,

		# CHANGELOG

		## v0.3.33 2014-09-04

		* Bumped version to 0.3.33
		* Added deprecation notice

		## v0.3.32 2014-05-30
		@@ -4,0 +9,0 @@

		@@ -312,2 +312,4 @@ 'use strict';
		this.removeAllListeners();
		// keep the error handler around, just in case
		this.socket.on('error', this._onError.bind(this));
		};
		@@ -314,0 +316,0 @@

		@@ -575,2 +575,5 @@ 'use strict';
		SMTPServerConnection.prototype._onCommandSTARTTLS = function() {
		if(this.server.options.disableSTARTTLS) {
		return this.client.send('502 5.5.2 Error: command not recognized');
		}
		if (this.client.secureConnection) {
		@@ -628,3 +631,3 @@ return this.client.send('554 5.5.1 Error: TLS already active');

		if (!this.client.secureConnection) {
		if (!this.client.secureConnection && !this.server.options.disableSTARTTLS) {
		response.push('STARTTLS');
		@@ -631,0 +634,0 @@ }

		{
		"name": "simplesmtp",
		"description": "Simple SMTP server module to create custom SMTP servers",
		"version": "0.3.32",
		"version": "0.3.33",
		"author" : "Andris Reinman",
		@@ -6,0 +6,0 @@ "maintainers":[

		# simplesmtp

		## DEPRECATION NOTICE

		This module is deprecated for production use. For SMTP servers use [Haraka](https://www.npmjs.org/package/Haraka), for SMTP clients use [smtp-connection](https://www.npmjs.org/package/smtp-connection).

		Simplesmtp is a module written for Node v0.6 and slightly updated for Node v0.8. It does not use Node v0.10 streams and probably is going to have a rocky future with Node v0.12. I do not have time to keep it up to date, the thing probably needs a major rewrite for Node v0.12.

		Should be fine though for integration testing purposes.

		## Info

		This is a module to easily create custom SMTP servers and clients - use SMTP as a first class protocol in Node.JS!
		@@ -79,2 +89,3 @@
		* disableDNSValidation - if set, do not validate sender domains
		* disableSTARTTLS - if set, do not use STARTTLS

		@@ -81,0 +92,0 @@ ### Example

Improved metrics