Nodemailer - SMTP Timeout - office365

Question

I am trying to use SMTP connection with nodemailer with office365 mail.

When I try to send mail, it throws up this error -

Error: connect ETIMEDOUT xx.xxx.xxx.xxx:587 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1161:14) errno: 'ETIMEDOUT', code: 'ECONNECTION', syscall: 'connect', address: 'xx.xxx.xxx.xxx', port: 587

It is not a proxy issue, since I tried outside of the network and it throws up the same error as well.

`

var nodemailer = require('nodemailer');
var transporter = nodemailer.createTransport({
    host: 'smtp.office365.com',
    secure: false,
    auth: {
        user: "[email protected]",
        pass: "xxxxx"
    },
    tls: {
        ciphers: 'SSLv3'
    }
});
var message = {
    from: 'Sender Name <[email protected]>',
    to: '"Receiver Name" <[email protected]>',
    subject: 'Nodemailer',
    text: 'Hello to myself!'
};
transporter.sendMail(message, function(error, response) {
    if (error) {
        console.log('Error occured');
        res.end("<html><body><h1>error</h1></body></html>");
        console.log(error);
        return;
    } else {
        console.log(response);
        res.end("<html><body><h1>success</h1></body></html>");
        console.log('Message sent successfully!');
    }
});

`

I tried with other services as well like Gmail, it also gives the same error inside and outside the network.

LisaJ LisaJ · Accepted Answer · 2018-12-04T15:50:28

Do you have a local firewall or anti-virus product that does port blocking? My company routinely blocks computers from making outbound connections on common SMTP ports because it was a common multi-mailer virus propagation path. smtp.office365.com responds on both port 25 and 587 from a host I know to be able to initiate outbound SMTP traffic.

[~]# nmap -p25,587 smtp.office365.com

Starting Nmap 7.60 ( https://nmap.org ) at 2018-12-04 10:39 EST
Nmap scan report for smtp.office365.com (40.97.170.178)
Host is up (0.027s latency).

PORT    STATE SERVICE
25/tcp  open  smtp
587/tcp open  submission

Nodemailer - SMTP Timeout - office365

2 Answers