Linux as Spam Filtering Server?
Okay, I'm curious to learn how many of you employ a Linux solution for your e-mail gateway SPAM filtering? I am wanting to employ a more robust SPAM filtering solution; however, cannot justify the cost to my employer for a shrink wrapped product. I have looked at Spam Assassin and Postfix and am curious to learn how reliable this type of setup is. I am also interested in an anti-virus solution as well.
Is Linux suitable for this mission and if so, how much maintenance is involved. I want something that you can setup, patch when needed, and it just works. Is this possible?
Our current environment uses an Exchange Server 2003 and this box is fed by another SMTP relay at the gateway that performs screening and of course relay. Pretty simple setup. Ideas, suggestions?
All of the instructional sites that I've found involve FC 4 and the various Red Hat distros. I'm looking for some good pointers in the area of SuSE 10. We currently employ a couple SuSE box's.