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Cleanup old Exchange 2003 to 2007 migration

Posted on 2013-11-21
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Last Modified: 2013-12-12
I have what I think is a unique situation here. I need to clean up an old 2003 to 2007 exchange migration which looks to be about 3 years old.

The migration was completed to the 2007 box but no other parts of it appear to be have done on the 2003 side, which is still running as a domain controller.

The 2007 box is running fine except for some Transport warning every few minutes:

event id: 5006
 "A route to Mailbox server CN=oldexchange... could not be found in store..."  

event id: 5020
The topology doesn't contain a route to Exchange 2000 Server or Exchange Server 2003 server oldexchange.domain.com" warning. But everything is working fine.


All the exchange services were all stopped on the 2003 box.

So, for fun, I dig up some old 2003 > 2007 migration links and read through on what to do to finish up a migration. How to remove the 2003 box. I fire up the services and see if the stores mount and they do. The mailbox store is basically empty. It looks like all mailboxes were moved.

Also, there are no connectors in the routing groups and offline address list appear to have been moved.

The article I'm reading mentions that I need to go to public folders on the old server and delete the store. (BTW, they use public folders here like crazy. They are all on the 2007 server and working fine.)

When I try this I get the, "You cannot delete this folder because it contains replicas". So the article says at this time you would choose "move replicas"

well, the last access time on any of these folders was 2011. If I do this, what happens?
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Question by:someonenamedbrendan
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Will Szymkowski earned 500 total points
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The following steps are a hgih level of what needs to be done to migrate Exchange 2003 to 2007...

-Address Lists - Ldap to OPATH - http://blogs.technet.com/b/exchange/archive/2007/01/11/3397719.aspx
-Email Address Policies - http://technet.microsoft.com/en-us/library/cc164351(v=exchg.80).aspx
-Migrate Public Folders - http://www.msexchange.org/articles-tutorials/exchange-server-2007/migration-deployment/Transitioning-Exchange-2000-2003-Exchange-Server-2007-Part3.html
-Remove Transfer Offline Address Book from 2003 server (create new OAB generation on 2007) - http://technet.microsoft.com/en-us/library/bb123917(v=exchg.80).aspx
-Migrate the Public Folder Hierarchy to Exchagne 2007 - http://technet.microsoft.com/en-us/library/bb331970(v=exchg.141).aspx
-Remove the RUS from Exchange 2003 (enterprise RUS removal via ADSIEdit) - http://technet.microsoft.com/en-us/library/bb288905(v=exchg.80).aspx
-Remove the Routing Group Connectors - http://exchangeserverpro.com/removing-routing-group-connectors-during-exchange-2007-migration/
-Uninstall Exchange from Add/Remove Programs

If you cannot remove Exchange from Add/Remove and as a last resotre you can use ADSIEdit to remove it manually.

Will.
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by:someonenamedbrendan
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Thanks, All those eventually lead to, delete the public folder at which point I can't because it says I have replicas. I can do the "move replicas" but I'm afraid to because I don't know what it does.
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by:Will Szymkowski
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In order to migrate the public folders you will need to create a new routing group connector back to your Exchange 2003 environment. You can do this from powershell on Exchange 2007, using new-routinggroupconnector cmdlet.

If you already have all of your public folder data in Exchange 2007 you can also remove the public folders via ADSIedit in the above links provided. I would do this as a last resotre. Try re-creating the routing group connector first.

Will.
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by:someonenamedbrendan
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Everything is replicated. The Public Folder Tree on the 2003 box is empty so I think I'm just going to do the ADSI option... just after my backup finishes.
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by:Will Szymkowski
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Thats all you need to do.

Will.
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by:someonenamedbrendan
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Ok.. I deleted the Public Folder via ADSI and was able to do an uninstall of Exchange which cleaned up all my routing issues. I'm all set.
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by:Will Szymkowski
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Excellent! Glad to hear that resolved your issue.

Will.
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