Updated DKIM signing

lib/dkim-relaxed-body.js

@@ -2,51 +2,89 @@
 
 // streams through a message body and calculates relaxed body hash
 
-const config = require('config');
 const Transform = require('stream').Transform;
 const crypto = require('crypto');
 
 class DkimRelaxedBody extends Transform {
     constructor(options) {
-        super(options);
+        super();
+        options = options || {};
         this.chunkBuffer = [];
         this.chunkBufferLen = 0;
-        this.bodyHash = crypto.createHash(config.dkim.hash);
+        this.bodyHash = crypto.createHash(options.hash || 'sha1');
         this.remainder = '';
+
+        this.debug = options.debug;
+        this._debugBody = options.debug ? [] : false;
     }
 
     updateHash(chunk) {
         let bodyStr;
 
-        if (chunk) {
-            bodyStr = this.remainder + chunk.toString('binary');
-            if (bodyStr.length < 1024) {
-                this.remainder = bodyStr;
-                return;
+        // find next remainder
+        let nextRemainder = '';
+
+
+        // This crux finds and removes the spaces from the last line and the newline characters after the last non-empty line
+        // If we get another chunk that does not match this description then we can restore the previously processed data
+        let state = 'file';
+        for (let i = chunk.length - 1; i >= 0; i--) {
+            let c = chunk[i];
+
+            if (state === 'file' && (c === 0x0A || c === 0x0D)) {
+                // do nothing, found \n or \r at the end of chunk, stil end of file
+            } else if (state === 'file' && (c === 0x09 || c === 0x20)) {
+                // switch to line ending mode, this is the last non-empty line
+                state = 'line';
+            } else if (state === 'line' && (c === 0x09 || c === 0x20)) {
+                // do nothing, found ' ' or \t at the end of line, keep processing the last non-empty line
+            } else if (state === 'file' || state === 'line') {
+                // non line/file ending character found, switch to body mode
+                state = 'body';
+                if (i === chunk.length - 1) {
+                    // final char is not part of line end or file end, so do nothing
+                    break;
+                }
             }
-            this.remainder = bodyStr.substr(-1024);
-            bodyStr = bodyStr.substr(0, bodyStr.length - this.remainder.length);
-        } else {
-            // final call
-            bodyStr = this.remainder;
-        }
 
-        // ignore trailing <CR>
-        if (bodyStr.length && bodyStr.substr(-1) === '\r') {
-            bodyStr = bodyStr.substr(0, bodyStr.length - 1);
-        }
+            if (i === 0) {
+                // reached to the beginning of the chunk, check if it is still about the ending
+                // and if the remainder also matches
+                if ((state === 'file' && (!this.remainder || /[\r\n]$/.test(this.remainder))) ||
+                    (state === 'line' && (!this.remainder || /[ \t]$/.test(this.remainder)))) {
+                    // keep everything
+                    this.remainder += chunk.toString('binary');
+                    return;
+                } else if (state === 'line' || state === 'file') {
+                    // process existing remainder as normal line but store the current chunk
+                    nextRemainder = chunk.toString('binary');
+                    chunk = false;
+                    break;
+                }
+            }
 
-        bodyStr = bodyStr.replace(/\r?\n|\r/g, '\n') // use js line endings
-            .replace(/[ \t]*$/mg, '') // remove line endings, rtrim
-            .replace(/[ \t]+/mg, ' '); // single spaces
+            if (state !== 'body') {
+                continue;
+            }
 
-        if (!chunk) {
-            bodyStr = bodyStr.replace(/\n+$/, '\n'); // remove trailing lines for final part
+            // reached first non ending byte
+            nextRemainder = chunk.slice(i + 1).toString('binary');
+            chunk = chunk.slice(0, i + 1);
+            break;
         }
 
-        bodyStr = bodyStr.replace(/\n/g, '\r\n'); // restore rfc822 line endings
+        bodyStr = this.remainder + (chunk ? chunk.toString('binary') : '');
+        this.remainder = nextRemainder;
+
+        bodyStr = bodyStr.replace(/\r?\n/g, '\n') // use js line endings
+            .replace(/[ \t]*$/mg, '') // remove line endings, rtrim
+            .replace(/[ \t]+/mg, ' ') // single spaces
+            .replace(/\n/g, '\r\n'); // restore rfc822 line endings
 
         let bodyChunk = Buffer.from(bodyStr, 'binary');
+        if (this.debug) {
+            this._debugBody.push(bodyChunk);
+        }
         this.bodyHash.update(bodyChunk);
     }
 
@@ -67,9 +105,7 @@ class DkimRelaxedBody extends Transform {
 
     _flush(callback) {
         // generate final hash and emit it
-        this.updateHash();
-        this.emit('hash', this.bodyHash.digest('base64'));
-
+        this.emit('hash', this.bodyHash.digest('base64'), this.debug ? Buffer.concat(this._debugBody) : false);
         callback();
     }
 }

lib/feeder-server.js

@@ -225,7 +225,7 @@ class FeederServer {
         });
 
         if (config.dkim.enabled) {
-            dkimStream = new DkimRelaxedBody();
+            dkimStream = new DkimRelaxedBody(config.dkim);
             dkimStream.on('hash', bodyHash => {
                 envelope.bodyHash = bodyHash;
 

lib/sending-zone.js

@@ -283,6 +283,7 @@ class SendingZone {
 
             // for <[email protected]>
             ' for <' + delivery.to + '>' +
+            // (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256)
             (delivery.tls ? '\r\n (version=' + delivery.tls.version + ' cipher=' + delivery.tls.name + ')' : '') +
 
             ';' +

test/dkim-relaxed-body-test.js

@@ -0,0 +1,65 @@
+'use strict';
+
+let fs = require('fs');
+let DkimRelaxedBody = require('../lib/dkim-relaxed-body');
+
+module.exports['Calculate body hash byte by byte'] = test => {
+    fs.readFile(__dirname + '/fixtures/message1.eml', 'utf-8', (err, message) => {
+        test.ifError(err);
+
+        message = message.replace(/\r?\n/g, '\r\n');
+        message = message.split('\r\n\r\n');
+        message.shift();
+        message = message.join('\r\n\r\n');
+
+        message = Buffer.from(message);
+
+        let s = new DkimRelaxedBody({
+            hash: 'sha256',
+            debug: true
+        });
+
+        s.on('hash', hash => {
+            test.equal(hash, 'BPn9yHxMRt2aqIXVxv9wDcV0TlsNua+PdNYnNyAIMLY=');
+            test.done();
+        });
+
+        let pos = 0;
+        let stream = () => {
+            if (pos >= message.length) {
+                return s.end();
+            }
+            let ord = Buffer.from([message[pos++]]);
+            s.write(ord);
+            setImmediate(stream);
+        };
+        setImmediate(stream);
+    });
+};
+
+
+module.exports['Calculate body hash byte all at once'] = test => {
+    fs.readFile(__dirname + '/fixtures/message1.eml', 'utf-8', (err, message) => {
+        test.ifError(err);
+
+        message = message.replace(/\r?\n/g, '\r\n');
+        message = message.split('\r\n\r\n');
+        message.shift();
+        message = message.join('\r\n\r\n');
+
+        message = Buffer.from(message);
+
+        let s = new DkimRelaxedBody({
+            hash: 'sha256',
+            debug: true
+        });
+
+        s.on('hash', hash => {
+            test.equal(hash, 'BPn9yHxMRt2aqIXVxv9wDcV0TlsNua+PdNYnNyAIMLY=');
+            test.done();
+        });
+
+        setImmediate(() => s.end(message));
+    });
+
+};

test/fixtures/message1.eml

@@ -0,0 +1,144 @@
+Content-Type: multipart/mixed;
+ boundary="----sinikael-?=_1-14707415696170.021441656324049596"
+From: Andris Test <[email protected]>
+To: [email protected]
+Subject: Nodemailer is unicode friendly =?UTF-8?Q?=E2=9C=94?= 1470741569613
+Message-ID: <[email protected]>
+X-Mailer: nodemailer (2.5.0; +http://nodemailer.com/; SMTP
+ (pool)/2.7.0[client:2.8.0])
+Date: Tue, 09 Aug 2016 11:19:29 +0000
+MIME-Version: 1.0
+
+------sinikael-?=_1-14707415696170.021441656324049596
+Content-Type: multipart/alternative;
+ boundary="----sinikael-?=_2-14707415696170.021441656324049596"
+
+------sinikael-?=_2-14707415696170.021441656324049596
+Content-Type: text/plain
+Content-Transfer-Encoding: 7bit
+
+Hello to myself!
+------sinikael-?=_2-14707415696170.021441656324049596
+Content-Type: multipart/related; type="text/html";
+ boundary="----sinikael-?=_4-14707415696170.021441656324049596"
+
+------sinikael-?=_4-14707415696170.021441656324049596
+Content-Type: text/html
+Content-Transfer-Encoding: 7bit
+
+<p><b>Hello</b> to myself <img src="cid:[email protected]"/></p>
+------sinikael-?=_4-14707415696170.021441656324049596
+Content-Type: image/png; name=image.png
+Content-ID: <[email protected]>
+Content-Disposition: attachment; filename=image.png
+Content-Transfer-Encoding: base64
+
+iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lE
+QVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQ
+AAAAAElFTkSuQmCC
+------sinikael-?=_4-14707415696170.021441656324049596--
+
+------sinikael-?=_2-14707415696170.021441656324049596--
+
+------sinikael-?=_1-14707415696170.021441656324049596
+Content-Type: text/plain; name=notes.txt
+Content-Disposition: attachment; filename=notes.txt
+Content-Transfer-Encoding: 7bit
+
+Some notes about this e-mail
+------sinikael-?=_1-14707415696170.021441656324049596
+Content-Type: application/octet-stream; name=attachment.bin
+Content-Disposition: attachment; filename=attachment.bin
+Content-Transfer-Encoding: base64
+
+AAAAAAAAAAAAAAAAAAAAAAAAAAD/dRhIixQkSLnA+gMCAQAAAEi4AAAAAAMAAADoAQAAAP80JEiJ
+RCQI/3UQSLgAAAAAAQAAAFroAgAAAJBQSLoAAAAAAQAAAEiLfCQQ6AMAAABIi3X4SIkEJEi4AAAA
+AD0AAABa6AQAAACQ6w9JO0XAD4QOAAAA6SkAAABIhcAPhSAAAABIi0UQ6AUAAABIi9BIuAAAAAAB
+AAAA6AYAAACQSIlFEP91EEi4AAAAAAEAAABa6AcAAACQ6w9JO0XAD4QOAAAA6a0AAABIhcAPjqQA
+AAD/dRhIixQkSLnA+gMCAQAAAEi4AAAAAAcAAADoCAAAAP80JEiJRCQI/3UQSLgAAAAAAQAAAFro
+CQAAAJBQSLoAAAAABQAAAEiLfCQQ6AoAAABIi3X4SIkEJEi4AAAAAD0AAABa6AsAAACQ6w9JO0XA
+D4QOAAAA6SkAAABIhcAPhSAAAABIi0UQ6AwAAABIi9BIuAAAAAABAAAA6A0AAACQSIlFEP91EEi4
+AAAAAAMAAABa6A4AAACQUEi4AAAAAAIAAABa6A8AAACQSLsw+wMCAQAAAINDC9F5H1DoEAAAAFhI
+uzD7AwIBAAAASboAAAAAABgAAEyJUwfJwhgASYtFqOnE////Dx9AAAAAAAD/fwAAyB8EAgEAAAAQ
+IQQCAQAAAHAhBAIBAAAA8CIEAgEAAADwIgQCAQAAAAEAAAABAAAAMJQFAgEAAAAAAAAAAAAAAAMA
+AAABAAAAEBoEAgEAAADglAUCAQAAAAQAAAAAAAAAkLAFAgEAAAAosAUCAQAAACiwBQIBAAAAAAAA
+AAAAAAAAlQUCAQAAAAIAAAABAAAAqC0EAgEAAAAQlQUCAQAAAAQAAAABAAAACCIHAgEAAAAAAAAA
+IAAAACMAAAABAAAAMJUFAgEAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAASAAAAAQAAAAAAAABR
+AAAAAAAAAAAAAAAAlQUCAQAAAAQAAAAAAAAAqC0EAgEAAAAAAAAAAAAAACCvBQIBAAAAAAAAAAAA
+AABDb252ZXJ0VG9TdHJpbmcAmFkOAQEAAAA4+wMCAQAAAFDSDgEBAAAAqC0EAgEAAAAdAAAACf8B
+AAAAAAAAAAAAcAMHAgEAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAADYlQUCAQAAAP//////////
+EJIFAgEAAAA4lAUCAQAAAHAhBAIBAAAAAAAAgAAAAAAZRGCkOyIAALhMAAIBAAAAkDUEAgEAAABA
+lQUCAQAAAAAAAAABAAAA0GwPAQEAAACoLQQCAQAAABwAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAEAAAAAAAABAlQUCAQAAAAAAAAAAAAAA//////////8AAAAAAAAAAABKDwEBAAAAEJIF
+AgEAAAAfAAAABgABAGCYBQIBAAAAiAMHAgEAAAAEAAQAAAAAAABhAAAAAAAAMJcFAgEAAADYlgUC
+AQAAAP//////////cCEEAgEAAABwIQQCAQAAADURAAABAAAAAAAAAAAAAAAAAAAAAAAAAMCVBQIB
+AAAAMJYFAgEAAAAAAAAAAQAAAMCXBQIBAAAAMJYFAgEAAAABAAAAAAAAANBsDwEBAAAAEJIFAgEA
+AAAeAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAMJYFAgEAAAAAAAAAAAAA
+AP//////////AAAAAAAAAAAASg8BAQAAABCSBQIBAAAAIAAAAAYAAQB4mAUCAQAAAKADBwIBAAAA
+BAAEAAAAAAAAYQAALAQsHNiXBQIBAAAAMJYFAgEAAAD//////////3AhBAIBAAAAcCEEAgEAAAA1
+GQAA/38AAAAAAAAAAAAAAAAAAAAAAAColgUCAQAAADCXBQIBAAAAAAAAAAAAAAC4qQUCAQAAADCX
+BQIBAAAAAQAAAAEAAAAANg8BAQAAABCSBQIBAAAAIQAAAAYADQAwmwUCAQAAALgDBwIBAAAABRAE
+AAAAAAAAQAAAAQAAAKiaBQIBAAAAMJcFAgEAAAD///////////AiBAIBAAAAMJYFAgEAAAAwlwUC
+AQAAAAAAAAAgAAAAsDAEAgEAAADYlwUCAQAAAAAAAACBBgAAAAAAAAAAAADYlwUCAQAAAAEAAAAA
+AAAAAAAAAAAAAADYlwUCAQAAAAIAAACBBgAAEB8EAgEAAABYHgQCAQAAAGgfBAIBAAAAKCAEAgEA
+AADIHwQCAQAAABAhBAIBAAAAcCEEAgEAAADQIQQCAQAAAGAiBAIBAAAA8CIEAgEAAABIIwQCAQAA
+AKAkBAIBAAAAECUEAgEAAACYJwQCAQAAAPAnBAIBAAAAmCgEAgEAAAAoKQQCAQAAAOgqBAIBAAAA
+sC4EAgEAAADoLwQCAQAAADAvBAIBAAAAQDAEAgEAAAD4MAQCAQAAABg1BAIBAAAAqDYEAgEAAABI
+NgQCAQAAAAA4BAIBAAAAoDcEAgEAAADYlQUCAQAAAECVBQIBAAAA2JYFAgEAAAAwlgUCAQAAADCX
+BQIBAAAA2JcFAgEAAAComgUCAQAAAGCbBQIBAAAAGJwFAgEAAAA4oAUCAQAAAJCkBQIBAAAA+KMF
+AgEAAADQqAUCAQAAACioBQIBAAAAKKkFAgEAAADQqQUCAQAAAGCrBQIBAAAAAKsFAgEAAAC4qwUC
+AQAAALisBQIBAAAAWKwFAgEAAACgrQUCAQAAAECtBQIBAAAAsK4FAgEAAABQrgUCAQAAAJCwBQIB
+AAAAKLAFAgEAAABgsQUCAQAAAACxBQIBAAAAiLIFAgEAAADQsQUCAQAAAOCyBQIBAAAAcLQFAgEA
+AADYswUCAQAAAMi0BQIBAAAA4LcFAgEAAADguAUCAQAAAEC5BQIBAAAAiLoFAgEAAAAANg8BAQAA
+ABCSBQIBAAAAIgAAAAYADQDomwUCAQAAANADBwIBAAAABRAEAAAAAAAAQAAAdE5UAGCbBQIBAAAA
+2JcFAgEAAAD///////////AiBAIBAAAA2JcFAgEAAADoKgQCAQAAAAAAAAIhAAAASJgFAgEAAACo
+mgUCAQAAAAAAAAABAAAAAAAAAAAAAAComgUCAQAAAAEAAAABAAAA0C8EAgEAAAComgUCAQAAAAIA
+AAAAAAAAeDcPAQEAAAAQkgUCAQAAACMAAAAGAA0AQKwFAgEAAADoAwcCAQAAAAUQBAAAAAAAAEAA
+AAAAAAAYnAUCAQAAAKiaBQIBAAAA///////////wIgQCAQAAAKiaBQIBAAAAmCgEAgEAAAAAAAAA
+AAAAABibBQIBAAAAYJsFAgEAAAAAAAAAAAAAAAAAAAAAAAAAYJsFAgEAAAABAAAAaAAAAOAwBAIB
+AAAAYJsFAgEAAAACAAAA/////zhODwEBAAAAEJIFAgEAAAAkAAAACWoBALioBQIBAAAAAAQHAgEA
+AAAEAAQAAAAAAAJAAACeAAAAOKAFAgEAAABgmwUCAQAAAP//////////mCcEAgEAAABgmwUCAQAA
+AJgnBAIBAAAAmCcEAgEAAADQTw8BAQAAAKIHAAD/////wDEEAgEAAAAYnAUCAQAAAAAAAAAAAAAA
+AAAAAAAAAAAYnAUCAQAAAAEAAAABAAAAmJwFAgEAAAAYnAUCAQAAAAIAAABrAAAAyJwFAgEAAAAY
+nAUCAQAAAAMAAAABAAAAAAAAAAAAAABQnQUCAQAAAAUAAAAFAAAAAAAAAAAAAAAFAAAABAAAAAEA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABgAAAAEAAAD4479f/38AAMgfBAIBAAAAECEE
+AgEAAABwIQQCAQAAAPAiBAIBAAAA8CIEAgEAAAABAAAAAQAAAIidBQIBAAAAAAAAAAAAAAAGAAAA
+AAAAABAaBAIBAAAAOJ4FAgEAAAAEAAAAAAAAAJCkBQIBAAAA+KMFAgEAAAD4owUCAQAAAAAAAAAA
+AAAAWJ4FAgEAAAACAAAAAQAAABCSBQIBAAAAaJ4FAgEAAAAEAAAAAgAAALgtBwIBAAAAAAAAADgA
+AAA7AAAAAQAAAIieBQIBAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAsmgOAQEAAAAaFAAAeAAA
+AAEAAAAAAAAA/////wAAAAAAAAAABgAAABCSBQIBAAAA6J0FAgEAAADwogUCAQAAAFChBQIBAAAA
+GBQAAHEAAAABAAAAAAAAAP////8AAAAAAAAAAgEAAAAAAAAAAAAAAPCeBQIBAAAABQAAAAUAAAAA
+AAAAAAAAAAUAAAAEAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAQAAAPjj
+v1//fwAAyB8EAgEAAAAQIQQCAQAAAHAhBAIBAAAA8CIEAgEAAADwIgQCAQAAAAEAAAABAAAAKJ8F
+AgEAAAAAAAAAAAAAAAsAAAABAAAAEBoEAgEAAADYnwUCAQAAAAQAAAAAAAAAsK4FAgEAAABQrgUC
+AQAAAFCuBQIBAAAAAAAAAAAAAAD4nwUCAQAAAAIAAAABAAAAEJIFAgEAAAAIoAUCAQAAAAQAAAAA
+AAAAqB8HAgEAAAAAAAAAUAAAAFMAAAABAAAAKKAFAgEAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AACyngUCAQAAAGifBQIBAAAA+GMOAQEAAACDEwAAc3QrANgtBAIBAAAAEJIFAgEAAAAglwUCAQAA
+ABEAAAABAAAA+FkOAQEAAAAvFAAAjwAAAAEAAAAAAAAA/////wAAAAAAAAQA/////6gcDwEBAAAA
+EJIFAgEAAAAlAAAACQABAAAAAAAAAAAAGAQHAgEAAAAAAAAAAAAAAABAAAA4AAAAAAAAAAAAAAAY
+nAUCAQAAAP//////////MJ8FAgEAAACQnQUCAQAAABicBQIBAAAAAAAAAAAAAAA4oAUCAQAAAAAA
+AAABAAAAAAAAAAAAAAAQoQUCAQAAAAUAAAAFAAAAAAAAAAAAAAAFAAAABAAAAAEAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAABgAAAIgAAAD4479f/38AAMgfBAIBAAAAECEEAgEAAABwIQQC
+AQAAAPAiBAIBAAAA8CIEAgEAAAABAAAAAQAAAEihBQIBAAAAAAAAAAAAAAAIAAAAAAAAABAaBAIB
+AAAA+KEFAgEAAAAEAAAAAAAAANCoBQIBAAAA0KkFAgEAAADQqQUCAQAAAAAAAAAAAAAAGKIFAgEA
+AAACAAAAHlocQRzwChVCMAoZNiECeiYAAAAhDgcVEhUAAAAkHyO0YkG9GnAKGTYxMk0IDR41fjg+
+EQIaJgAAACEOBxUSFQAAACQfI7RiQb0adAoZNjEyTQgNHhECAAAAJQQjQQAAIZIAHwAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAJCdBQIBAAAAAAAAAAAAAAAgpwUCAQAAAIClBQIBAAAAuKMFAgEAAAAE
+AAAAAAAAAAUAAAAAAAAAKB8EAgEAAAAAAAAAAAAAALCiBQIBAAAABQAAAAUAAAAAAAAAAAAAAAUA
+AAAEAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAPjjv1//fwAAyB8E
+AgEAAAAQIQQCAQAAAHAhBAIBAAAA8CIEAgEAAADwIgQCAQAAAAEAAAABAAAA6KIFAgEAAAAAAAAA
+AAAAAAcAAAAAAAAAEBoEAgEAAACYowUCAQAAAAQAAAAAAAAAoK0FAgEAAABArQUCAQAAAECtBQIB
+AAAAAAAAAAAAAAC4owUCAQAAAAIAAAABAAAAkJ0FAgEAAADIowUCAQAAAAQAAAAAAAAAGDAHAgEA
+AAAAAAAAPAAAAD8AAAABAAAA6KMFAgEAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADy////AAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAkJ0FAgEAAAABAAAAAAAAAGjGBQIBAAAA
+AQAAAAEAAAAAAAAAAAAAAAEAAAABAAAAAAAAAAAAAAAAAAAAAAAAAFDSDgEBAAAAkJ0FAgEAAAAn
+AAAACQABAAAAAAAAAAAAMAQHAgEAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAACQpAUCAQAAAP//
+////////UKEFAgEAAADwogUCAQAAABicBQIBAAAAAAAAgAAAAAAZRGCkOyIAALhMAAIBAAAAoKAF
+AgEAAAD4owUCAQAAAAAAAAAAAAAA0GwPAQEAAACQnQUCAQAAACYAAAAAAAEAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAEAAAAAAAAD4owUCAQAAAAAAAAAAAAAA//////////8AAAAAAAAAAAAAAAAA
+AAAAeKoFAgEAAAALAAAABgAAAAAAAAAAAAAABQAAAAQAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAQAAAAYAAAAAAAAA+OO/X/9/AADIHwQCAQAAABAhBAIBAAAAcCEEAgEAAADwIgQCAQAA
+APAiBAIBAAAAAQAAAAEAAAB4pQUCAQAAAAAAAAAAAAAACgAAAAEAAAAQGgQCAQAAACimBQIBAAAA
+BAAAAAAAAABgqwUCAQAAAACrBQIBAAAAAKsFAgEAAAAAAAAAAAAAAEimBQIBAAAAAgAAAAEAAABQ
+oQUCAQAAAFimBQIBAAAABAAAAAAAAAC4LQcCAQAAAAAAAABMAAAATwAAAAAAAAA=
+------sinikael-?=_1-14707415696170.021441656324049596--

test/run.js

@@ -51,7 +51,9 @@ let send = () => {
     for (let i = 0; i < rcptCount; i++) {
         recipients += (i ? ', ' : '') + 'Test #' + (i + 1) + ' <test+' + (i + 1) + '@test' + (++domainCounter % domainCount + 1) + '.tahvel.info>';
     }
-recipients = '[email protected]';
+
+    recipients = '[email protected]';
+
     // Message object
     let message = {