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Nodemailer not working in my ubuntu vps server, but works on localhost (windows) both development and production

I am developing a website in nextjs, and when i send emails using nodemailer in my windows environment it works well both on development and production. But when i deploy the application on my ubuntu web server i am getting this error:

Error: Invalid login: 535 Authentication Failed
    at SMTPConnection._formatError (webpack-internal:///(rsc)/./node_modules/nodemailer/lib/smtp-connection/index.js:616:19)
    at SMTPConnection._actionAUTHComplete (webpack-internal:///(rsc)/./node_modules/nodemailer/lib/smtp-connection/index.js:1230:34)
    at SMTPConnection.eval (webpack-internal:///(rsc)/./node_modules/nodemailer/lib/smtp-connection/index.js:432:26)
    at SMTPConnection._processResponse (webpack-internal:///(rsc)/./node_modules/nodemailer/lib/smtp-connection/index.js:757:20)
    at SMTPConnection._onData (webpack-internal:///(rsc)/./node_modules/nodemailer/lib/smtp-connection/index.js:589:14)
    at SMTPConnection._onSocketData (webpack-internal:///(rsc)/./node_modules/nodemailer/lib/smtp-connection/index.js:144:48)
    at TLSSocket.emit (node:events:519:28)
    at addChunk (node:internal/streams/readable:559:12)
    at readableAddChunkPushByteMode (node:internal/streams/readable:510:3)
    at Readable.push (node:internal/streams/readable:390:5)
    at TLSWrap.onStreamRead (node:internal/stream_base_commons:191:23)
    at TLSWrap.callbackTrampoline (node:internal/async_hooks:130:17) {
  code: 'EAUTH',
  response: '535 Authentication Failed',
  responseCode: 535,
  command: 'AUTH PLAIN'
}

here is my nodemailer configurations:

const transporter = nodeMailer.createTransport({
            host: 'smtp.zoho.com',
            port: 465,
            secure: true, // use SSL
            auth:{
                user: process.env.USER,
                pass: process.env.PASS
            },
        })

the emails are zoho based emails, [email protected], i have made communication to both my vps providers and zoho support but the error is not coming from their end.

Also i tried with gmail also, and the error is the same, and i have created app based password, and all the credentials are correct.

Anyone who can offer assistance, i will appreciate.

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    The issue was that process.env.USER was passing "root" instead of my email (username), after i changed process.env.USER to something like process.env.EMAIL_USER, my application was able to send the emails.


  2. 0

    As mentioned in the documentation, ensure following things are correct on our side:

    • If our email has custom domain ([email protected]), we need to use smtppro.zoho.com smtp domain.
    • In nodemailer, secure: true means, it uses TLS. Read more
    • If the mentioned email account has Two Factor Authentication (TFA) enabled, then you might need to generate Application specific Password.
    • Ensure process.env.USER and process.env.PASS envrionment variables are set correctly in the machine.
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