SatyrScan is an open source, virus and spam scanner for CentOS and RedHat.
It currently works off the Exim exim_mainlog file located in /var/log.
It is fully intended for use with cPanel.
***Release Note: Version 1.0.0 - Release Date 08/31/2013: Only scans for spam causing scripts at this point.
***Release Note: Version 1.1.0 - Release Date 09/05/2013: Will have full virus scanning capibility and an editable configuration file.