Note: This page is quite old and is likely out of date. My opinions may have also changed dramatically since this was written. It is here as a reference until I get around to updating it.

Consider Postfix instead. It was written with security in mind.

• http://www.sendmail.com/sm/open_source/docs/m4/tweaking_config.html
• http://etutorials.org/Linux+systems/red+hat+linux+bible+fedora+enterprise+edition/Part+IV+Red+Hat+Linux+Network+and+Server+Setup/Chapter+19+Setting+Up+a+Mail+Server/Configuring+sendmail/
• http://www.fredshack.com/docs/sendmail.html

Installation

yum install sendmail -y

Configure

Any configuration changes need to be re-compiled by the m4 processor. This is available in the sendmail-cf package which can be install using the following command:

yum install sendmail-cf -y