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Relaying email to the same domain on a different network Exchange 2007 and 2010

Posted on 2011-05-07
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Got a feeling the question will be longer than the answer.........
We've got 2 companies which have email domains of domain1.com and domain2.com and we are merging them. We have built a new Server 2008 R2 with Exchange and created a brand new domain called domain1.com (the same as the main company as the domain1.com company is going to be the main one on the new server) and we have moved the domain2 company onto this and this has gone fine. The plan is in a few weeks to then migrate the main domain1.com company onto it so we are all on the same internal domain. The problem is that the main domain1.com company has it's own Exchange 2007 server at present and the MX records for domain1.com point to their server but now that we have added an accepted domain onto the new Exchange 2010 for domain1.com whenever we try to send an email to domain1.com it doesn't go which we presumed was because it's own internal domain is domain1.com so we've tried to set it to an external relay domain and an internal relay domain (nothing more than this) but the emails still bounce back.
To summerise we have an internal domain called domain1.com on a new server but we need to send emails to a different server and exchange server which is also domain1.com

Hope this makes sense (at all)

Any help would be great
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Question by:Netexperts
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by:p_nuts
ID: 35713623
Tricky :D

Disable the domain for now... The beat way is to add the second domain during the migration of the MX records.. Kind of switching phones and then forwarding one phone to itself... It don't work ..

So either setup the MX to go yo the new server or stop the server from acting as the domain owner as it clearly isn't yet..
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by:Netexperts
ID: 35714994
Thanks but when you say "stop the server from acting as the domain owner" what exactly do you mean ?
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MAS earned 1500 total points
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by:Netexperts
ID: 35768730
Thanks
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