Re: IIS 5's SMTP and Stopping NDR's ?


"Sanford Whiteman" <swhitemanlistens-software@xxxxxxxxxxxxxxxxxxxxx> wrote
in message news:op.tsw7zyv46c17zw@xxxxxxxxxxxxxxxxxxxxxxx
What's happening is that a lot of people
send SPAM to my server (to non-existent addresses)...

There is little reason for a contemporary MX to accept mail for
non-existent addresses. Your problem starts there. What is it that
prevents you from loading a recipient list and using a transport event
sink to reject at the connection level?

I didn't know that could be done. Can you elaborate on how this is
accomplished using Exchange 2000 and
a separate SMTP machine as a relay? If I can get the mail server to just
reject all connection attempts to non-existant mailboxes that would be a lot
better :-)


The issue of suppressing NDRs -- accepting, then later bit-bucketing,
messages firmly identified as spam -- is different. That's the "Bouncing
spam is bad netizenship/bouncing spam makes you complicit in Joe Jobs" vs.
"Not bouncing undelivered messages breaks the RFCs/you can never be sure
enough of spamminess" debate. *That* debate has swung strongly in favor
of the first position for several years.

I don't know much about that - all I know is that my IIS 5 SMTP machine is
kindly sending NDR reports for every email it receives that is not addressed
to an existing mailbox. Of course, the account used to send the mail does
not exist so it's a waste for everyone.


--Sandy



.

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