On Sat, 4 Sep 1999, Wietse Venema wrote: > Whatever reasoning the poster used, it is invalid with any reasonable > mail system, because it is the mail system that chooses the bounce > message originator address; the bounce message originator address > is not under control by the attacker. > > In other words, the suggested loop does not exist. I can personally vouch for most cc:mail installations being so braindead that they will bounce indefinitely. One such machine returned 5800 bounce messages from a single complaint sent to postmaster@rDNS about relayed spam - with each additional message being 2kb larger than the previous one. Put 2 of those back-to-back and see what happens. AB
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 15:02:24 PDT