Update mailer.js, added NTLM auth

config/mailer.js

-const nodemailer = require('nodemailer')
+const nodemailer = require('nodemailer');
+const nodemailerNTLMAuth = require('nodemailer-ntlm-auth');
+
 
 var env = process.env.NODE_ENV || 'testing';
 const config = require('./config')[env]
@@ -8,8 +10,16 @@ var smtpTransport = nodemailer.createTransport({
     secure: config.mailer.secureConnection,
     port: config.mailer.port,
     auth: {
+      type: 'custom',
+      method: 'NTLM',
       user: config.mailer.authUser,
-      pass: config.mailer.authPass
+      pass: config.mailer.authPass,
+     options: {
+        domain: 'ad'
+      }
+    },
+    customAuth:{
+        NTLM: nodemailerNTLMAuth
     }
 });
   
@@ -25,4 +35,4 @@ var mailer = {
     options: mailOptions
 }
 
-module.exports = mailer
\ No newline at end of file
+module.exports = mailer