Re: IMF question, stop accepting messages for invalid users

In article <OT3btW0SGHA.2276@xxxxxxxxxxxxxxxxxxxx>, Alexander Zammit wrote:
Altough it is true that this feature can be used in Directory Harvesing. The
SMTP transport, on which Exchnage relies, now supports tar pitting. This is
very effective in protecting against these type of attacks.

Is this how senders get names from my domain to place in the from address? I
am plagued by messages from random names at my domain, and from real names at
my domain. One really persistent spammer is trying to sell site promotion
services and I get messages from me to me about his product. I can see having
a filter to remove messages from non-existent names in my domain, but how do
deal with the ones that use real names?

Hollis D. Paul [MVP - Outlook]
Mukilteo, WA USA



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