Hit ENTER after each Tag to add it to your post; Numbers in parentheses represent the Tag's usage.
ClamAV used to be a pretty good antivirus product (especially considering it's free), but I couldn't figure out why it has gone so bad lately. Recent reports show it only catching about 62% of infected files.
Maybe everyone else knew, but I didn't... Cisco took over the group that put ClamAV together in 2014. Knowing Cisco I doubt they have any resources devoted to ClamAV.
This also answers why the ClamAV no longer replies to viruses submitted to http://cgi.clamav.net/sendvirus.cgi
All the old information regarding the parameters to incorporate 3rd party command line scanners was deleted with the old forum data. The easiest and economical was F-Prot but the were bought out too and their new command line scanner won't work with SmarterMail. The most effective seems to be Avira and they have a command line scanner that would probably work with SmarerMail, but so far I haven't come up with a proper command line to make it work (plus it costs about $100 per year). I'm open to any other options.
I tried to work with AVG command line for a while, but didn't get it to work.