Ok I would have to disaggree that sendmail is atrocious. It is a very flexible system but does require a great deal of knowlege to use. If you are looking for something simple, then no sendmail is not for you. But if you want control and plenty of security options then sendmail is great. As for the security record, well since it is the most used mail server in unix it is being inspected by all hackers for vulnerabilities. It actually hasn't had too bad a record until recently.

Anyway, yes postfix is a lot easier to use, but sendmail is a lot better to use.

Procmail is the easiest way to invoke spamassassin. That part I aggree with.

Just my opinion.