amavisd-milter is a sendmail milter for amavisd-new version 2.2.0 and above
which use the new AM.PDP protocol. Full amavisd-new functionality is
available, including adding spam and virus information header fields,
modifying Subject, adding address extensions and removing certain recipients
from delivery while delivering the same message to the rest.

WWW: http://amavisd-milter.sourceforge.net