This is the Distributed Checksum Clearinghouse (DCC) package, including 
the command line (e.g. procmail) interface, dccproc; the SpamAssassin 
and Postfix interface, dccifd; the Sendmail milter interface, dccm; 
the DCC server, dccd; and the DCC greylisting server, dccd-grey.

Also included are utilities such as cdcc and all of the manual pages 
and documentation.

WWW: http://www.rhyolite.com/anti-spam/dcc/

- Dean

dean@odyssey.apana.org.au