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Exchange 5.5 / 2003 CoExistance

I am in the process of migrating over to Exchange 2003.   Currently I have only moved about 10 mailboxes over to the 2003 server (including myself).   I am not experiencing any problems but some users would get bouncebacks sending externally, such as those below.  I moved those particular mailboxes back to the old server and the problem was resolved.   I am wondering if I can / should run the Internet mail wizard on the new server.   If I do, will external mail be sent out directly and internal mail be sent over to the old server?  



      EDITED@oprhp.state.ny.us on 4/20/2009 12:36 PM
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.The MTS-ID of the original message is:c=US;a= ;p=EDIT;l=TEMPEX-090420163536Z-134

      EDITED@oprhp.state.ny.us on 4/20/2009 12:36 PM
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.The MTS-ID of the original message is:c=US;a= ;p=EDIT;l=TEMPEX-090420163536Z-134

     EDITED@trcsolutions.com on 4/20/2009 12:36 PM
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.The MTS-ID of the original message is:c=US;a= ;p=EDIT;l=TEMPEX-090420163536Z-134

      EDITED@trcsolutions.com on 4/20/2009 12:36 PM
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.The MTS-ID of the original message is:c=US;a= ;p=EDIT;l=TEMPEX-090420163536Z-134


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zreisman
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zreisman
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2 Solutions
 
MesthaCommented:
I have lost count of the number of deployments of Exchange 2003 I have done and I have never run the Internet Mail wizard, so ignore that.

Unfortunately the NDR isn't very helpful.
Can you see an SMTP Connector on the Exchange 2003 server in ESM? If so, can you add the Exchange 2003 server to its list of bridgeheads?

Simon.
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jot1245Commented:
Mestha is correct.
Add the Exchange 2003 server in the SMTP connector as bridgehead.
If you do not see the SMTP connector in ESM on Exchange 2003, then create one SMTP connector in ESM and then add Exchange 2003 server as localbridgehead.

If still that does not resolve your issue - you need to do one more step - because IMC in Exchange 5.5 server always takes precedence on SMTP connector.
Change the cost in IMC to 100. By default the cost in SMTP connector will be 1.
Restart IMC service on Exchange 5.5 and SMTP on Exchange 2003.
That should resolve the issue.
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zreismanAuthor Commented:
If I look at the connectors from ESM on the 2003 server I see the 5.5 connectors and where I can add a bridgehead server but cannot edit the connector.    When I open it on the 5.5 server I can't find where to add bridgehead servers.  

I attached screenshots.

Also, should I be moving the mailbox from the 5.5 ESM or 2003?


2003connector.JPG
55connector.JPG
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MesthaCommented:
I haven't got an Exchange 5.5 system to look at, but another option would be to simply create another SMTP connector on the Exchange 2003 server.

Simon.
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zreismanAuthor Commented:
Ok.  I did that.   I'm moving over another group of mailboxes now and I'll see if it blows up.

Can I just delete those two extra connectors on NT2?  (CC:mail and MS Mail)?   Aren't those ancient services?
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MesthaCommented:
I wouldn't touch them until you have removed Exchange 5.5.

Simon.
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jot1245Commented:
Good that you have created new SMTP connector on Exchange 2003 - that is the correct step.
Still if you are not able to send emails from Exchange 2003 directly - as I have mentioned in the previous comment - you need to change the cost in IMC on Exchange 5.5 server.
Go to the properties of IMC (the one that you have pasted above in the screen shot).
Go to Address Space and change the cost to 100. (We are doing this because by default - Exchange 5.5 IMC takes precedence over Exchange 2003 SMTP connector).
Note: This change you need to make only if the email flow from Exchange 2003 does not work after creating the new SMTP connector.
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