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Exchange 2003 to Exchange 2010 migration

Posted on 2011-09-15
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Last Modified: 2012-05-12
I am in the process of migrating to Exchange 2010 from 2003.

After moving over all the mailboxes and public folders. I went ahead and reconfigured my firewall to point SMTP and SSL to the new Exchange 2010 box.

I realized that mail flow wasn't coming in/out. I checked the EMC in 2003 and found the relaying was not allowed. I allowed relaying from the new Exchange 2010 to the 2003 box and mail flow started to work again. The only issue at this time is, email destined for 'outside' end up sitting in the 'routing queue' on the 2003 for a few minutes before going out.

1) Any ideas why it would route right away (like it used to)??

2) Why is the mail still being router thru the 2003 box at this point?

3) How can I be sure that Exchange 2010 is fully in control of all the roles, so I can go ahead and uninstall 2003?

4) Do I 'need' to uninstall 2003? or can I just unplug the 2003 box when I'm done removing all my other stuff from it?
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Question by:clesin
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by:ctc1900
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It sounds like you don't have an internet send connector on Exchange 2010.  

http://www.techiecomputersolutions.com/blog/28

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Author Comment

by:clesin
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It actually does have a send connecter - it was created automatically when installing Exhcane 2010 to be joined to 2003.

However, when looking at the 'source server', there is nothing there. If I try and add the 2010 server, this is the error that I get:

 send connector
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Author Comment

by:clesin
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Can someone please answer this question of mine:

I am up to step 11 (uninstalling Exchange 2003) but I cannot find any 'Routing Groups' in System Manager in Exchange 2003!

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_2881-Migrate-Small-Business-Server-2003-to-Exchange-2010-and-Windows-2008-R2.html?sfQueryTermInfo=1+10+2003+2010+30+migrat+sb


Does that mean that something went wrong at the install?? Please see my previous post and let me know if there is any connection.

Where should I go from this point?

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by:DAHITSydney
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have you point your internet connection to exchange 2010?
double check the cost on the connector.
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Author Comment

by:clesin
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The cost on both server are set to 1.

BTW: I found the routing groups by clicking somewhere in System Manager and selecting 'show routing groups' - I just can't remember where..
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Author Comment

by:clesin
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I am at the point where I need the disc 2 of SBS 2003 to uninstall Exchange, and of course I can't locate it. Is there any way to work around it?
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Accepted Solution

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clesin earned 0 total points
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I created a new send connecter on the 2010 box putting the 2010 server in the 'source server'. Mail flow leaves the server right away now.
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Author Closing Comment

by:clesin
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The article I was following did not state that a new connecter has to be created on the new server.
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