Plesk 17 Mail doesnt work

Question

I'm using Plesk 17 with my Node.js app. as best as I could. I can receive e-mails from gmail, and I can send e-mails from my @mydomain to @mydomain. But I cannot send e-mails from @mydomain to anywhere else. I get below error -

postfix/smtp[27320]: A981CC1FE4: to=, relay=none, delay=90, delays=0.3/0.01/90/0, dsn=4.4.1, status=deferred (connect to alt2.gmail-smtp-in.l.google.com[74.125.130.27]:25: Connection timed out)

Answer 1

The answer is that the port 25 is blocked, so we have 3 options

1- Contact the ISP to unblock the port
2- Change the port in postfix to submission port 587 per example
3- Use other mail server.

Hope it helps someone.