Enable submission port 587 in Postfix

Enabling submission port support for Postfix is really easy. To have postfix listen on both 25 and 587, be sure that the line starting with submission is uncommented in /etc/postfix/master.cf:

smtp      inet  n       -       n       -       -       smtpd
submission inet n      -       n       -       -       smtpd

3 Responses

  1. [...] can’t connect to port 25 on anybody else’s servers. I am not sure if you are looking for this. Racker Hacker

  2. I think you mean: /etc/postfix/master.cf (not main.cf)

  3. @Trashman - Thanks for spotting the error! I’ve corrected it in the post.

Leave a Reply