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Exchange 2003 to 2010 migration mail flow

Posted on 2011-05-11
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Last Modified: 2012-05-11
Hi,
I have a migration in progress, just about ready to wrap it up but I am having a problem with email flow.  The new server has all of the users email boxes, the old server has the two default email boxes left.  SMTP traffic is ported to the new server, the send and receive connectors are working fine.  So the old server is just about ready to uninstall.  However, when I delete the Interop RGC, the old servers queue is still picking up a few emails, which of course stay in the queue until I add another Interop RGC.  I have deleted the MX record that points to the old server.  Is this common behavior?
Thanks - Wayne
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Question by:wspjones99
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Amit earned 1000 total points
ID: 35739293
During Exchange 2010 install, you might have choose a RG connector server. You can delete it, if email flow is working fine. Normally, i will keep old server for atleast 2 weeks online and decom it. Else you might end up in repoint user outlook to new server.
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Expert Comment

by:Amit
ID: 35739307
And I guess you did the Transition from 2003 to 2010
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by:wspjones99
ID: 35739644
Hi,
How do I find the RG connector server and delete it? Shell?
Thanks - Wayne
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Author Comment

by:wspjones99
ID: 35741357
Hi,
Looks like I did not delete the connector on the 2010 end.  I have deleted both now and so far no mail has shown up on the 2003 server....
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Expert Comment

by:Amit
ID: 35741447
Thanks for the update...let me know if you need any further help
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Author Comment

by:wspjones99
ID: 35741538
Well, after deleting RGCs on both sides I had another email end up in the queue on the 2003 server...
As soon as I recreated the RGCs the email went through.....
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Expert Comment

by:Amit
ID: 35741648
You need to create the send connector in Exchange to start the mailflow.
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Author Comment

by:wspjones99
ID: 35743012
Hi,
Thanks for the reply.  I have a send and receive connector setup on the 2010 server.  Email flow to/from the 2010 server is fine.  The only problem now is that when I delete the RGCs between the 2003 and 2010 server I have sporadic emails ending up in the queue on tha 2003 server.  I can send and receive with my test email account after I have deleted the RCG connectors.  I do not know how some emails are ending up in the 2003 server....
Thanks - Wayne
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Expert Comment

by:Amit
ID: 35746371
Can you check the header information and see how it is flowing. Any spam server in between, which is doing mail routing? Paste the header information if possible
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Author Comment

by:wspjones99
ID: 35747588
Hi,
I found the culprit.  There was one application that was still pointing to the 2003 server.
Thanks for you help.
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Expert Comment

by:Amit
ID: 35747656
Thanks for the update
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