I need help urgently. The company I work for attempted to migrate there current exchange 2003 organisation to exchange 2007. The migration was done by bring up a new windows 2008 server with exchange 2007. However the migration did not work correctly as mail was not passing between the different exchange and the outside world. So the project was dropped and a new send connector was created in exchange 2003 to enable exchange to send mail without touching the exchange 2007. So the exchange 2007 box currently does nothing. We now need to work on correcting the migration. In an ideal world I would like to get the new server to exchange 2010 SP1 with Windows Server 2008 R2. My question therefore is can I just unintall exchange 2007 from the current machine, delete the exchange routing groups that relate to this box and then format the machine. Reinstall Windows Server 2008 R2 and exchange 2010 SP1 and start the migration again. The current exchange 2003 is on a domain controller and was one of the reasons for starting the move. The machine runs windows sever 2003 r2. I know I could work on correcting the issues related to exchange 2007 but this would then create me additional problems as I would have no 64bit server to do the additional migration later to windows server 2008 r2 and exchange 2010 so ideally need to do all in one go. I did started the uninstall process through program and features and it bought up the following. Can I just follow the advise given? Summary: 3 item(s). 1 succeeded, 2 failed. Elapsed time: 00:00:22 Mailbox Role Prerequisites Failed Error: Uninstall cannot continue. Database 'Public Folder Database': The public folder database "EX0\Second Storage Group\Public Folder Database" is the default public folder database for the following mailbox database(s): EX0\First Storage Group\Mailbox Database . Before deleting the public folder database, assign a new public folder database to the mailbox database(s). Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.3&id=b6e3b32a-8848-46cb-9567-72288ac15f60 Elapsed Time: 00:00:14 Client Access Role Prerequisites Completed Elapsed Time: 00:00:03 Hub Transport Role Prerequisites Failed Error: This computer is configured as a source transport server for 1 connector(s) in the organization. These must be moved or deleted before Setup can continue. Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.3&id=67c28d7f-cf6f-4f9c-b8a0-7e28ed318e2f Error: This computer is configured as a bridgehead server for 3 routing group connector(s) in the organization. These must be moved or deleted before Setup can continue. Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.3&id=b35c4602-e6c4-4fcc-873c-31f80a2582e1 Warning: There are 2 messages waiting in the 'ex0\77803' queue. Proceeding with the removal of the server role may result in data loss. Elapsed Time: 00:00:04 Thank you for any help you can give me.Network Administrator

You won't be removing the administrative or routing groups, as they're the same ones that will be used by Exchange 2010, so there's no need. First remove the mailbox database. Then you can remove the public folder database if it has no content; if it does, you'll need to delete the content first. Make sure that you only delete folders you don't need. If the folders are replicas of folders you need to keep, then there should be an instance on the Exchange 2003 server, so you need to delete the replica that's on the Exchange 2007 server. After you've removed the databases, then you can remove the routing group connectors and send connectors. Again, only remove the Exchange 2007 ones; don't remove your Exchange 2003 connectors. Those steps will correct the problems you have identified in your post. Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

I'm confused on the public folder part. If I use exchange system manager I have folderd below the public folder database on ex0 (exchange 2007) in the Exchange Administrative Group (FYDIBOHHF23SPDLT) but not in the public folder on exchange (exchange 2003) in the first administrator group.Network Administrator

Use Get-PublicFolderStatistics.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi Daniel, Per the log you referred, it seems that you have not remove some configuration properly when you removed the exchange 2007 server. Such as exchange 2007 server setted as the the connector end, and so on. You could refer to below about how to completely remove the exchange 2007 server. http://support.microsoft.com/kb/927464 If you still could not remove the server, it maybe caues the corrupted deployment of the exchange 2007 server, it is recommended that you do the recovery deploy, and then remove it, because the manually remove exchange 2007 server is not suppoted by MS. Yet you could remove it through ADSI if you want. And after you remove the exchange 2007 server, you could deploy the exchange 2010 server, follow below: http://technet.microsoft.com/en-us/exdeploy2010/default(EXCHG.140).aspx Regards! Gavin