Howtoforge posted a tutorial about integrating ClamAV into ProFTPd for Virus Scanning on Debian Lenny

This tutorial explains how you can integrate ClamAV into ProFTPd for virus scanning on a Debian Lenny system. This is achieved through mod_clamav. In the end, whenever a file gets uploaded through ProFTPd, ClamAV will check the file and delete it if it is malware.

  How To Integrate ClamAV (Through mod_clamav) Into ProFTPd For Virus Scanning On Debian Lenny