moderated Virus scanning
I've been testing virus/phishing scanning the last few weeks and I'm pretty confident that it's catching what it should. In testing, it's scanning all emails, all uploaded files and photos. And right now, if the sender is not a subscriber, it drops any emails it finds has a virus or phishing attack.
My default implementation would be to turn it on so that it blocks all emails, files and photos that it finds has a virus or phishing attempt. Do you see any reason to not do it this way?
The scanner I'm using is here: http://www.clamav.net/