I have a spam filter host (actually it is a cluster but this does not matter) that serves 2-3 MTAs simultaneously. One of them is a list server the other is my smart host as well as MX. Now if I send a message to a mailing list. The following happens:
1. My desktop machine passes the mail to the smarthost. 2. The smarthost gives it to spamfilter. 3. The checked mail goes to list server. 4. The list server passes it to spamfilter. (i.e. the same as scanned it a seconds ago. 5. One of outgoing mails goes back to my MX (that is identical to my smart host) 6. MX asks spamfilter to scan the mail third time. 7. Mail arrives to my desktop host. What can I do if I don't want to waste CPU cycles. Is there any way to put a (cryptographically signed) certificate into the header at the first scan like this "Already checked" ? This mark could be recognized in all the following rounds so amavisd could pass the message without further checks. A simple "Received: by ..." header is not enough because it can be forged easily by impostors. Gabor ------------------------------------------------------------------------------ ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo _______________________________________________ AMaViS-user mailing list AMaViS-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amavis-user Please visit http://www.ijs.si/software/amavisd/ regularly For administrativa requests please send email to rainer at openantivirus dot org
