MailScanner and Exchange 5.5

Rob Poe rpoe at
Wed Nov 8 16:19:12 GMT 2006

Same problem with a Groupwise 5.2 system.  I used sendmail's access.db 

user at domain                OK
user2 at domain              OK
@domain                       550 Invalid Recipient

>>> "Steve Roy-Wojciechowski" <steve.roy.wojciechowski at>
11/7/2006 5:57 PM >>>
I am setting up a  MailScanner system that will sit infront of an
Exchange 5.5 server.  I had hoped to use milter-ahead but exchange 5.5
blindly accepts mail for the domain without first checking the user.
I was wanting incoming mail to the mailscanner  machine to be checked
by exchange and dropped at the incoming point if the user/mailbox
doesn't exist. I am using sendmail on the Linux/MS machine with mail
being forwarded via a mailertable rule.  Is there another way of
accomplishing this with either sendmail or mailscanner or even on
There are approx 100 email addresses.  My client will be upgrading to
exchange 2003 sometime, but not in the near future.

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