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Mail loops.Mail loops.Posted Aug 21, 2003 11:42 UTC (Thu) by dwmw2 (subscriber, #2063)Parent article: On the value of virus notifications The scary thing is that half of these autoresponders are so broken they're likely to cause mail loops... they respond to bounce messages, and the messages they send out aren't bounce messages either. All it takes is for one or two of them to start triggering on the Subject line alone, and including the original subject in their autoreply's subject, and they'll mailbomb each other to death. My mailing lists don't allow bounce messages to get through to the list -- if the incoming mail had a null sender, it's trapped for moderation -- but these broken autoresponders manage to get round that rule.
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Mail loops. Posted Aug 22, 2003 3:33 UTC (Fri) by proski (subscriber, #104) [Link] In fact, a loop has been found in Mailman: http://mail.python.org/pipermail/mailman-users/2003-August/031131.html. There was no confirmation, but it looks scary. Looks like a DoS.
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