Clamav

ClamAV is the anti-virus engine used by Mail-Toaster.
 * IMPORTANT: You are advised to keep ClamAV up to date. It is an integral part to enabling e-mail delivery into your Mail-Toaster. Without it functioning, your e-mail will be deferred until you correct the problem (and update).

Steps
toaster_setup.pl -s ports /usr/local/etc/rc.d/clamav-freshclam stop /usr/local/etc/rc.d/clamav-clamd stop portupgrade -frR clamav-0.XX                  <-- replace XX with your installed version toaster_setup.pl -s clamav