Mar 22, 2009, 08:41 AM
Unfortunately clamav has been pretty far behind most AVs for new virus signatures; I wouldn't even consider it a decent screen for an email server. The "best" AV seems to be overtaken every year by the people who research them, so the best thing to do is http://lmgtfy.com. I personally use AVG free, since I hate real-time scanning. I only use it to scan stuff that I download occasionally.