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Sharing a domain between Exchange 2003 and postfix

Posted on 2013-05-27
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Last Modified: 2013-06-01
Hi

We have installed a Postfix server (latest versions & updates) on site that has an Exchange 2003 server

We have managed to configure forwarding of mail from Postfix to Exchange, but not the other way around.

I thought that the 'forward all mail with unresolved recipients to host' option would suffice, but apparently this probably refers to emails belonging to different domains.

So we followed the detailed and well laid out directions in the
following article.

We created an additional address space @localhost in the default recipient policy which we defined as the primary address space, and ticked the option "This Exchange Organization is responsible for all mail delivery to this address" and deleted the current address space (our original domain).

We then created a second recipient policy in which defined an address space corresponding to our original domain, declared it as primary, ensured that the option "This Exchange Organization is responsible for all mail delivery to this address" remained unticked, and left the second address space in the list (@localhost) alone.

We created an smtp connector, named it, indicated within square brackets our Postfix IP internal address in the 'Forward all mail through this connector to the following smart hosts' field and selected our Exchange server as bridgehead server.
We then added our domain (address space) omitting the @, and ticked the 'Allow messages to be relayed to these domains' option.

We then restarted the routing engine and the SMTP service
 
But forwarding isn't happening.

any ideas ?

thanks

yann
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Question by:Yann Shukor
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Expert Comment

by:Simon Butler (Sembee)
ID: 39199276
Do the messages bounce back with an error?
If you look in message tracking do you see the errors?
If you send an email from a local client to one that is on the other server, what happens?

Simon.
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Accepted Solution

by:
Yann Shukor earned 0 total points
ID: 39199636
Hi
I guess I wasn't as thorough as I could have been.
We have a Mailcleaner system filtering incoming mail
This was what was blocking the incoming mail ; Exchange never had the chance to actually act upon the incoming mails

Got to find a way to allow specific email addresses through Mailcleaner

thanks Simon
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Author Closing Comment

by:Yann Shukor
ID: 39212593
the question was wrongly formulated since I had omitted the presence of Mailcleaner in the equation
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