Re: tons of NDR messages

ANDY <ANDY@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
we are using exchange 2003 with sp2. Some of our users are getting
continously tons of NDR and undeliverable messages. our spam filter
which is trend micro is not filtering these email messages. How do we
stop these messages coming to user? please let me know solution. This
is really urgent.

I presume these are NDRs to messages nobody in your organization sent,
right? Sounds like your users are the victim of spoofing. These NDRs are
legit (even if the original message that caused them wasn't) - so there's no
reason for your spam filter to catch them. This happens to all of us and we
just learn to delete the NDRs. You can google for 'backscatter' if you want
more info.


.

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