Thanks Robert.

And you are correct - the exchange rejects mail destined to non-existent
mailboxes!

Due to lack of time, I have not yet found a quick method to have
sendmail authenticate against active directory so I've instructed
sendmail to relay all mail and leave it to exchange to deal with
rejection and NDR's.


Any chance you know of a quick and dirty method to implement =
sendmail=1EAD
authentication? I did search during build of the sendmail box, but did
not find conclusive instructions to do so - possibly because I was under
immense pressure to get a spam identifier installed.



Cheers,
AK.

-----Original Message-----
From: Robert - eLists [mailto:lists06@abbacomm.net]=20
Sent: Thursday, 14 June 2007 10:47 AM
To: users@spamassassin.apache.org
Subject: RE: Problems with Received: header checks and ALL_TRUSTED
rule...

AK,

The MTA should not accept email for non existent email addresses

- rh