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Message-ID: <404752A1.4122.38DEAD0@localhost> From: nick at virus-l.demon.co.uk (Nick FitzGerald) Subject: Backdoor not recognized by Kaspersky Ron DuFresne <dufresne@...ternet.com> wrote: > > how about the smtp server simply rejecting mail from spoofed hosts ? > > as all the viruses generate spoofed hosts and it is very easy for any > > smtp server to do a dns lookup on the sending server, if the hostname > > / ip address do not match reject the message. > > Finally some sanity marks this thread! "sanity"?? Care to define the "nearly foolproof" "spoofed hosts detection" algorithm that will not have an unbearably high false-positive rejection rate?? Regards, Nick FitzGerald
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