When you get spam, you report it as SPAM to some local SRS (spam repository server). Now the mail server within that group will contact the SPS and to get the fresh list of spam message and won't deliever to other people in the group.

Your SRS can contact other SRS on network and spread the message as well. The advantage is that you can select the group to call what is SPAM and what's is not SPAM message.

So if you want to avoid all the 'quick rich message', you can do so.. But if you want any travel message coming to you, you can get it..
-- artist, Aug 20 2003

DCC http://www.rhyolite.com/anti-spam/dcc/
Distributed Checksum Clearinghouse [quarl, Nov 09 2004]

Vipul's Razor http://razor.sourceforge.net/
[quarl, Nov 09 2004]

Pyzor http://pyzor.sourceforge.net/
[quarl, Nov 09 2004]

I Think that spam generators need a spam suppository.
-- Zimmy, Aug 20 2003


Or if someone else doesn't want the travel message, then you don't get it either...
-- suctionpad, Aug 20 2003


Too easily defeated by spammers, who already randomize elements of each outgoing message to avoid these forms of detection and avoidance.

So it'd stop some spam, but probably not enough to make the effort to create and support such a system worthwhile.
-- cburley, Aug 08 2004


I can think of a half dozen ways to bust this system, and I'm not a spammer. Keep thinking...
-- zigness, Aug 08 2004



random, halfbakery