Nodemailer connection timeout error

Solution 1:

This may be firewall problem. I faced similar problem in Ubuntu (Digital Ocean server). Tried to fix the issue for 3 days, tried using auth2 also, tried with inactive firewall using ufw inactive command, but no luck. Finally I checked Digital Ocean admin panel and created firewall for the droplet. Problem solved by enabling TCP inbound and outbound in firewall settings.

Solution 2:

Have you looked at this answer.

It turns out that in order for Google to authorize a third party server to access your account via SMTP now, you have to enable “Less Secure Apps” on your gmail account, if you want to use username/password (more info here).

So you have two option:

• use OAuth

• make your account less secure