remove 'tls' from nodemailer.createTransport

config/mailer.js

@@ -5,15 +5,12 @@ const config = require('./config')[env]
 
 var smtpTransport = nodemailer.createTransport({
     host: config.mailer.host,
-    secureConnection: config.mailer.secureConnection,
+    secure: config.mailer.secureConnection,
     port: config.mailer.port,
     auth: {
       user: config.mailer.authUser,
       pass: config.mailer.authPass
-    },
-    tls: {
-        ciphers: config.mailer.tlsCiphers
-    } 
+    }
 });
   
 var mailOptions = {