ClamAV includes a new, redesigned clamav-milter. The most notable
difference is that the internal mode has been dropped and now a working
clamd companion is required. The second important difference is that now
the milter has got its own configuration and log files. To compile ClamAV
with the clamav-milter just run ./configure
--enable-milter
and make as usual. Please consult your MTA's manual on how to connect it
with the milter.
SourceFire 2013-04-16