Postfix Mail Server

Postfix is a fast reliable open source mail server by IBM (written by: Wietse Venema).

Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different.

Postfix Configuration
Postfix Spam Control
fatal: open database /etc/aliases.db
Postfix vs. qmail - Performance
Postfix Admin
Postfix Commands
Install Postfix on FreeBSD