John Franklin wrote: > Spammers will try all MX records. If the first one fails with a 5xx > NO SPAM ALLOWED, which should be a fatal error, it'll try the next one > until it gets through or fails on all of them.
Or worse, inject the mail into the lower priority MX servers FIRST, hoping that they are not as well protected as the primary MX server and that the primary will let the spam through because the SMTP transaction carrying the spam came from a secondary MX instead of joe-random machine on the internet. :-( --[Lance] -- Celebrate The Circle http://www.celebratethecircle.org/ Carolina Spirit Quest http://www.carolinaspiritquest.org/ My LiveJournal http://www.livejournal.com/users/labrown/ GPG Fingerprint: 409B A409 A38D 92BF 15D9 6EEE 9A82 F2AC 69AC 07B9 CACert.org Assurer -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
