I have to totally dis-agree with ANYONE that says the GFI product is worth a hoot. I ran the demo and was very displeased with it. I only have 600 mail enabled users, I can't imagine if I had more. With GFI EVERYTHING was global. I couldn't specify certain settings for certain users. Everything was configured at the server. Why not give the users some control over what they want blocked and not blocked out of their mailboxes.
I ran GFI for about 10 days and then found myself un-installing it. I then tried Sunbelt Software's IHateSpam for Servers and ordered it. Over a year later, I still love it. If you don't believe me, they too offer a FREE demo.
A free demo doesn't mean squat. The quality of the program/service/support/updates is what really matters.
I know I was a bit hateful, but I really don't like the GFI program.
Ken Mickeletto