node.js - emails are not sending using nodemailer - Stack Overflow

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I am using smtp.emailcloud.smartping.io as my SMTP service provider. The emails are sent on my localhost successfully. But not sending on my server getting below error :

SendMail error: ==>> Error: read ECONNRESET
at TLSWrap.onStreamRead (node:internal/stream_base_commons:217:20) {
   errno: -104,
   code: 'ESOCKET',
   syscall: 'read',
   command: 'CONN'
}

my code is as below :

const transporter = nodemailer.createTransport({
    host: process.env.SMTP_HOST,
    port: process.env.SMTP_PORT,
    secure: false,
    auth: {
        user: process.env.SMTP_USER,
        pass: process.env.SMTP_PASS
    },
    tls: {
        rejectUnauthorized: false
    },
    dnsTimeout: 180000, //3 minutes timeout
    debug: true,
    logger: true,
})

const sendEmail = async (emailData) => {
    try {
        const { senderEmail, sendTo, subject, emailBody, attachmentName } = emailData;

        const attachmentPath = path.join(process.cwd(), 'uploads/attachments', attachmentName);

        const mailOptions = {
            from: senderEmail,
            to: sendTo,
            subject: subject,
            html: emailBody,
            attachments: attachmentName !== 'null'
                ? [
                    {
                        filename: attachmentName,
                        path: attachmentPath
                    }
                ]
                : []
        }
        if (emailData) {
            mailOptions['cc'] = emailData;
        }
        console.log('mailOptions', mailOptions);
        // transporter.sendMail(mailOptions)
        transporter.sendMail(mailOptions)
            .then(info => console.log('Email sent: ==>>', info))
            .catch(error => console.error('SendMail error: ==>>', error));
    } catch (error) {
        console.log('error -->>', error);
        Sentry.captureMessage("Something went wrong in sendEmail util function");
        Sentry.captureException(error);
    }
};

I have tried below changes in config :

const transporter = nodemailer.createTransport({
    host: process.env.SMTP_HOST,
    port: 465,
    secure: true,
    auth: {
        user: process.env.SMTP_USER,
        pass: process.env.SMTP_PASS
    },
    tls: {
        rejectUnauthorized: false
    },
    dnsTimeout: 180000, //3 minutes timeout
    debug: true,
    logger: true,
})

I have tried several solutions from google but did not work.

It would be greate if you help me to resolve it.

Thank you

I am using smtp.emailcloud.smartping.io as my SMTP service provider. The emails are sent on my localhost successfully. But not sending on my server getting below error :

SendMail error: ==>> Error: read ECONNRESET
at TLSWrap.onStreamRead (node:internal/stream_base_commons:217:20) {
   errno: -104,
   code: 'ESOCKET',
   syscall: 'read',
   command: 'CONN'
}

my code is as below :

const transporter = nodemailer.createTransport({
    host: process.env.SMTP_HOST,
    port: process.env.SMTP_PORT,
    secure: false,
    auth: {
        user: process.env.SMTP_USER,
        pass: process.env.SMTP_PASS
    },
    tls: {
        rejectUnauthorized: false
    },
    dnsTimeout: 180000, //3 minutes timeout
    debug: true,
    logger: true,
})

const sendEmail = async (emailData) => {
    try {
        const { senderEmail, sendTo, subject, emailBody, attachmentName } = emailData;

        const attachmentPath = path.join(process.cwd(), 'uploads/attachments', attachmentName);

        const mailOptions = {
            from: senderEmail,
            to: sendTo,
            subject: subject,
            html: emailBody,
            attachments: attachmentName !== 'null'
                ? [
                    {
                        filename: attachmentName,
                        path: attachmentPath
                    }
                ]
                : []
        }
        if (emailData) {
            mailOptions['cc'] = emailData;
        }
        console.log('mailOptions', mailOptions);
        // transporter.sendMail(mailOptions)
        transporter.sendMail(mailOptions)
            .then(info => console.log('Email sent: ==>>', info))
            .catch(error => console.error('SendMail error: ==>>', error));
    } catch (error) {
        console.log('error -->>', error);
        Sentry.captureMessage("Something went wrong in sendEmail util function");
        Sentry.captureException(error);
    }
};

I have tried below changes in config :

const transporter = nodemailer.createTransport({
    host: process.env.SMTP_HOST,
    port: 465,
    secure: true,
    auth: {
        user: process.env.SMTP_USER,
        pass: process.env.SMTP_PASS
    },
    tls: {
        rejectUnauthorized: false
    },
    dnsTimeout: 180000, //3 minutes timeout
    debug: true,
    logger: true,
})

I have tried several solutions from google but did not work.

It would be greate if you help me to resolve it.

Thank you

• node.js
• smtp
• nodemailer

Share Improve this question Follow edited Nov 20, 2024 at 6:20 JIGNESH PATEL asked Nov 19, 2024 at 12:49 JIGNESH PATELJIGNESH PATEL 39755 silver badges2020 bronze badges

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2 Answers 2

Sorted by: Reset to default 1

Can you check the sever network configuration and firewall configuration please? Before I had a similar problem with NodeJS server but after fixing firewall configuration using ufw or firewalld, it was fine.

After trying many solutions from Google and StackOverflow. I came to know that my code is correct the issue was with SMTP credentials. I have used other SMTP credentials and it worked.

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