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node.jsemailgoogle-cloud-platformsmtpnodemailer

Connection timeout at SMTPConnection._formatError

I am getting this error in production when the GCP VM instance tries to send mail, while it works locally.

{ "textPayload": "Error: Connection timeout\n at SMTPConnection._formatError (/usr/src/app/node_modules/nodemailer/lib/smtp-connection/index.js:784:19)\n at SMTPConnection._onError (/usr/src/app/node_modules/nodemailer/lib/smtp-connection/index.js:770:20)\n at Timeout.<anonymous> (/usr/src/app/node_modules/nodemailer/lib/smtp-connection/index.js:229:22)\n at listOnTimeout }

const transporter = createTransport({
    host: "smtp.gmail.com",
    port: 465,
    secure: true,
    auth: {
      user: "user",
      pass: "pass", // gmail pass
    },
  });

I have tried the App password too.

Solution

  • I think the problem was the firewall and after many attempts issue still was not fixed. So I created a cloud function to send emails.