>I'm trying to figure out which would the best implementation for my mail >and >web server. Any experiences? Caveats? I'm on CentOS 3. Check out maia: www.maiamailguard.com Based on amavisd-new, it supplies all the professional outsourced filter style features. Using it with clamav, I've never received a virus, and it's been 99.28 percent effective with my spam situation, better numbers than I've gotten from postini. Jacob Leaver C-Corp.net