Browse - Computer Tips - Postfix: not listening to port 25

Date: 2019sep20
Product: Postfix

Q.  Postfix: not listening to port 25

A.  Ensure your firewall is open and check...

In /etc/postfix/main.cnf

Change from
inet_interfaces = localhost

to
inet_interfaces = all

On Azure you need to ask special permission for this port to be opened.