Just an FYI. I just installed the updated rpms from dungog for clam antivirus. The new stuff includes being able to change who the problem/virus e-mail reports get sent to (Sender, Recipients, Admin). Modify the from address and the admin address(s). automatically delete infected mail (monthly daily certain time(like 5pm for me). And, a check box for spamassassin. I'm using ASSP for spam and for me it works better than spamassassin, but that check box could be nice--it simply forwards all scanned mail to spamassassin.
Here is a screen shot..
http://82camaro.netfirms.com/clamav.htm