on 08/12/2003 02:07 PM Bob Apthorpe wrote:


Has someone explained to him what a horrible idea this is? Spam is usually forged to look like it came from a non-existant or innocent address and bouncing the spam just adds to network burden and implicit denial-of-service attacks on those whose addresses are forged into the mail.


Nah, it's a great idea. As long as by 'bounce' you mean 'reject' as Bob says. When I say 'bounce' I mean 'reject' and innnocents aren't hurt by this any more than any reject for any other reason. You don't accept email addressed to a user that doesn't exists. You don't wring your hand and think "Gosh, I better accept all mail that comes to my domain even if there is no such user so that no innocents get hurt". It's just as reasonable to bounce (reject) SPAM as "Looks like SPAM" as it is to bounce (reject) for "User unknown".

When you look at a spammer's SPAM he has accomplished his objective.
He doesn't care that it went into a special little folder first.

Just throw MIMEDefang or a similiar milter into the mix and you're golden if you want to reject mail.

Note, though, that it _is_ moronic to try to return mail to the sender
in the "From" line of a message. But that's not what a bounce (reject) does.

-- Mike




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