Many popular mailing list programs add either "List-Id:" or "Mailing-List:" to the messages. These would be good additions to your rules.
Another approach is to target individual list programs; for example, the mailman server that the SAtalk list uses adds "X-Mailman-Version: 2.0.5" to the mail. If you cover ezmlm, mailman, and yahoogroups, you'll catch the vast majority of mailing lists these days. Majordomo and LISTSERV are becoming more and more rare. But beware: if these rules are added to spamassassin, intelligent spammers (oxymoron? you be the judge) might use the fact to help get their spam under the "radar". So the effect for these rules should be relatively small. --Bill. -- William R Ward [EMAIL PROTECTED] http://www.wards.net/~bill/ ----------------------------------------------------------------------------- If you're not part of the solution, you're part of the precipitate. _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk