Automatic virus scan of uploaded files on BBS?

WWIV did, written by Wayne Bell. Later development was taken over by Jon Riker (Tolkien) in St. Louis (who has moved off the radar, I THINK somewhere in texas). I ran a WWIV board and was on WWIVnet for quite a few years. Still have a backup of the last day the BBS was running (on CDROM) as well as every file ever uploaded. That would include great gobs of C64 software, and just about every DOS/EarlyWindows app of the period. WWIV didn't have virus scanning hard coded into the BBS. But in the configuration there were specific hooks to call external programs upon upload. This was to scan for viri, test the integrity of the zip file, as well as insert an ascii art file inside the archive saying "This file was from.....". If you want proof, I can send you the running BBS :) Jay