Since the introduction of SpamAssassin, Computing and Network Services
(CNS) has continued to investigate ways to further reduce the amount of
spam, unsolicited bulk e-mail, arriving in your inbox.

On Monday, March 31, we will be implementing an automatic, system-wide
spam filtering program called the Distributed Checksum Clearinghouse
(DCC). DCC works in a manner similar to anti-virus filters, checking
incoming e-mail messages against a database of known spam messages and
deleting the incoming message if it matches. Since the DCC database is
being constantly updated from thousands of sites, and a message has to
be reported hundreds of thousands of times before it is considered to be
spam, you can be assured that only spam messages will be deleted by DCC.

The Distributed Checksum Clearinghouse filtering should dramatically
reduce the amount of unsolicited bulk e-mail you receive; it will take
effect automatically without the need for you to change any of your
e-mail settings. We suggest you also use SpamAssassin -
http://www.cns.yorku.ca/computing/email/spamassassin.html
to catch some of the spam that might get past DCC.

Questions or concerns about this email, should be directed to the
CNS Helpdesk in the Computing Commons, Parking Structure II,
(voice: 736-5800, email: [log in to unmask]).