Install Postfix on Ubuntu Server

Installing Postfix Mail Transport Agent (MTA) is very simple on ubuntu/debian.

# apt-get install postfix

Common configuration is internet site.

Listen Address

If the server only used by internal application for sending mail, then there is no need to bind to all interfaces. Just bind to loopback interface 127.0.0.1 as is more safe. The configuration located in /etc/postfix/main.cf.

# service postfix restart
# netstat -ntap | grep :25
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      8176/master

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