cannot send mail by nodemailer (smtp) from mail server

aaP_bcwe8c

I get this error when I'm trying to connect to the email

Aug 19 19:26:35 mail postfix/smtps/smtpd[364709]: connect from localhost.localdomain[127.0.0.1]
Aug 19 19:26:35 mail postfix/smtps/smtpd[364709]: TLS SNI localhost from localhost.localdomain[127.0.0.1] not matched, using default chain
Aug 19 19:26:35 mail postfix/smtps/smtpd[364709]: lost connection after EHLO from localhost.localdomain[127.0.0.1]
Aug 19 19:26:35 mail postfix/smtps/smtpd[364709]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 commands=1

aaPanel_Kern

Hello, please use port 25 and turn off STMP security

aaP_bcwe8c

aaPanel_Kern

Hello, thanks for your answer.

I'm using port 25 and I don't have SSL set for the email.

I'm getting this error in the email log:

Aug 20 09:56:30 mail dovecot: master: Warning: Killed with signal 15 (by pid=402472 uid=0 code=kill)
Aug 20 09:56:31 mail dovecot: master: Dovecot v2.3.16 (7e2e900c1a) starting up for imap, pop3, lmtp (core dumps disabled)
Aug 20 09:57:01 mail dovecot: imap-login: Login: user=<admin@mydomain.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=402501, secured, session=<Wp9CxRggxox/AAAB>
Aug 20 09:57:01 mail dovecot: imap(admin@mydomain.com)<402501><Wp9CxRggxox/AAAB>: Disconnected: Connection closed (CLOSE finished 0.000 secs ago) in=73 out=1482 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0
Aug 20 09:57:23 mail postfix/submission/smtpd[402524]: connect from localhost.localdomain[127.0.0.1]
Aug 20 09:57:23 mail postfix/submission/smtpd[402524]: TLS SNI localhost from localhost.localdomain[127.0.0.1] not matched, using default chain
Aug 20 09:57:23 mail postfix/submission/smtpd[402524]: lost connection after EHLO from localhost.localdomain[127.0.0.1]
Aug 20 09:57:23 mail postfix/submission/smtpd[402524]: disconnect from localhost.localdomain[127.0.0.1] ehlo=2 starttls=1 commands=3
Aug 20 09:57:31 mail postfix/submission/smtpd[402524]: connect from localhost.localdomain[127.0.0.1]
Aug 20 09:57:31 mail postfix/submission/smtpd[402524]: TLS SNI localhost from localhost.localdomain[127.0.0.1] not matched, using default chain
Aug 20 09:57:31 mail postfix/submission/smtpd[402524]: lost connection after EHLO from localhost.localdomain[127.0.0.1]
Aug 20 09:57:31 mail postfix/submission/smtpd[402524]: disconnect from localhost.localdomain[127.0.0.1] ehlo=2 starttls=1 commands=3

And I'm getting this error when trying to connect with nodemailer:

/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:798
            err = new Error(message);
                  ^

Error: Missing credentials for "PLAIN"
    at SMTPConnection._formatError (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:798:19)
    at SMTPConnection.login (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:452:38)
    at /www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-transport/index.js:272:32
    at SMTPConnection.<anonymous> (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:215:17)
    at Object.onceWrapper (node:events:633:28)
    at SMTPConnection.emit (node:events:519:28)
    at SMTPConnection._actionEHLO (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:1360:14)
    at SMTPConnection._processResponse (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:982:20)
    at SMTPConnection._onData (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:763:14)
    at SMTPConnection._onSocketData (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:195:44) {
  code: 'EAUTH',
  command: 'API'
}

aaPanel_Kern

Are the email username and password correct? Try to test whether it can be used normally from the sending interface in the mail server?

aaP_bcwe8c

aaPanel_Kern

I can send mail from the sending interface. I'm not sure whether I need to put admin or admin@mydomain.com to the username field, but I tried both. The password is correct. I'm sending my nodemailer configuration:

const transporter = nodemailer.createTransport({
    host: "127.0.0.1",
    port: 25,
    secure: false,
    auth: {
        user: "admin@mydomain.com",
        pass: "mypassword123"
    },
    tls: {
        rejectUnauthorized: false
    }
});

transporter.sendMail({
    from: '"MyDomain Admin" <admin@mydomain.com>',
    to: 'some@one.com',
    subject: "test mail", 
    text: "testing",
    html: '<p>testing</p>',
});

aaPanel_Kern

aaP_bcwe8c
try

const transporter = nodemailer.createTransport({
    host: "127.0.0.1",
    port: 25,
    secure: false,
    auth: {
        user: "admin@mydomain.com",
        pass: "mypassword123"
    },
    tls: {
        rejectUnauthorized: false
    }
});

const mailOptions = {
    from: '"MyDomain Admin" <admin@mydomain.com>',
    to: 'some@one.com',
    subject: "test mail", 
    text: "testing",
    html: '<p>testing</p>',
};


const sendMail = () => {
    return new Promise((resolve, reject) => {
        transporter.sendMail(mailOptions, (error, info) => {
            if (error) {
                reject(error);
            } else {
                resolve(info);
            }
        });
    });
};

sendMail()
    .then((info) => {
        console.log('Email sent:', info.response);
    })
    .catch((error) => {
        console.error('Error sending email:', error);
    });

aaP_bcwe8c

I'm getting this with that code:

Error sending email: Error: Missing credentials for "PLAIN"
    at SMTPConnection._formatError (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:798:19)
    at SMTPConnection.login (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:452:38)
    at /www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-transport/index.js:272:32
    at SMTPConnection.<anonymous> (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:215:17)
    at Object.onceWrapper (node:events:633:28)
    at SMTPConnection.emit (node:events:519:28)
    at SMTPConnection._actionEHLO (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:1360:14)
    at SMTPConnection._processResponse (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:982:20)
    at SMTPConnection._onData (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:763:14)
    at SMTPConnection._onSocketData (/www/wwwroot/nodeserver/node_modules/nodemailer/lib/smtp-connection/index.js:195:44) {
  code: 'EAUTH',
  command: 'API'
}

aaPanel_Kern

Don't know much about this, I suggest you use another email client to send

aaP_bcwe8c

I am running the mail server on ubuntu 22

Could that be a problem?