> > > I am setting up a postfix instance as submission only to compliment > dovecot in imap mode. > Is there a way to turn off listening on port 25 and only have submission > listen on 587? > I already know how to bind the submission service to 587 in the > master.cf
Any service could be commented out in master.cf > > I assume listening on 25 is controlled by inet_interfaces however i > don't see anything in docs about specifying "nothing", its either all or > a specific IP. > In most cases it is safe to bind it to the "loopback-only" interface Is my only choice to allow postfix to bind to 25 and just firewall it off from the public? You can comment it in master.cf but even if you couldn't, you can always bind it to the localhost only either by preprending smtp service with "127.0.0.1:" in master.conf or by using inet_interfaces="loopback-only" Latter approach is recommended. >
