Use Sendmail as a satellite system

First, the only time I have actually used sendmail is on our very outdated work server, which comes with Sendmail as standard and do not have a package manager.

This guide has been created by configuring a Red Hat Enterprise Linux ES release 4 (Nahant).

To configure Sendmail, we need to locate sendmail.cf, the main configuration file.

In this particular install, it is located at /etc/mail/sendmail.cf

Open it in your favorite editor, which is vim and search for DS.

Edit so it looks something like this:

# "Smart" relay host (may be null)
DSsmtp.company.com