A checksum of the mail is created and if the same mail gets retransmitted after some time, it will be accepted. Virus- and spam-mails won't be retransmitted, so they don't get through.
How long will it be until the spamware or worm-propagation mechanism du jour will start retrying?
That sort of greylisting will at best get some short term benefit at long-run incremented cost (and at the expense of legitimate senders who are forced to bear the cost of queueing and retransmission).
Not A Good Idea[tm], IMO.
-- Matthias
-- Braindump-Blog http://matthias.leisi.net/ _______________________________________________ swinog mailing list [EMAIL PROTECTED] http://lists.init7.net/cgi-bin/mailman/listinfo/swinog
