nodemailer fails with connection refused, using known good SMTP server

Question

I have a mail server setup and working (dockerized dovecot/postfix on Linode, using the tvial docker image) - I can send and receive mail from both roundcube and the mail client on my macbook.

But setting up nodemailer with the same SMTP server and credentials, I get:

{ Error: queryA ECONNREFUSED mail.xxxxx.com
    at errnoException (dns.js:50:10)
    at QueryReqWrap.onresolve [as oncomplete] (dns.js:238:19)
  code: 'EDNS',
  errno: 'ECONNREFUSED',
  syscall: 'queryA',
  hostname: 'mail.xxxxx.com',
  command: 'CONN' }

I'm using the sample script from the docs:

"use strict";
const nodemailer = require("nodemailer");

// async..await is not allowed in global scope, must use a wrapper
async function main(){

   // Generate test SMTP service account from ethereal.email
  // Only needed if you don't have a real mail account for testing
  //let account = await nodemailer.createTestAccount();

  // create reusable transporter object using the default SMTP transport
  let transporter = nodemailer.createTransport({
    host: "mail.xxxxx.com",
    port: 465,
    secure: true, // true for 465, false for other ports
    auth: {
      user: "[email protected]", 
      pass: "pppppp" 
    }
  });

  // setup email data with unicode symbols
  let mailOptions = {
    from: '"Fred Foo 👻" <[email protected]>', // sender address
    to: "[email protected]", // list of receivers
    subject: "Hello ✔", // Subject line
    text: "Hello world?", // plain text body
    html: "<b>Hello world?</b>" // html body
  };

  // send mail with defined transport object
  let info = await transporter.sendMail(mailOptions)

  console.log("Message sent: %s", info.messageId);
  // Preview only available when sending through an Ethereal account
  console.log("Preview URL: %s", nodemailer.getTestMessageUrl(info));

  // Message sent: <[email protected]>
  // Preview URL: https://ethereal.email/message/WaQKMgKddxQDoou...
}

main().catch(console.error);

I also get the same error without trying to send an email using:

transporter.verify((err, success) => {
    if (err) 
        console.error(err);
    else
        console.log('Your config is correct');
});

Answer 1

Had the same problem. Just use a version earlier 5.0.0.

For install specific version use npm install package@version

In our case: npm install [email protected]