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I have restored and mounted an EDB file onto a new Exchange 2007 Server. However, the old server is still online and although all the mailboxes I need are in the newly-mounted database, in Exchange 2007 System Manager it still shows that the mailbox is associated with the old server.

If I try to "Move" the database it actually tries to copy the files from the old server to the new server, which is not necessary because they are already there - and produces and error about the mailbox on the destination already existing.

How can I simply tell Exchange (AD?) to use the new server to find the mailbox rather than the old?

Edit:

I did the restore by taking the old server offline (turning off all Exchange services), copying EDB file to the new server, restoring it with eseutil, and mounting it to the new server. I did it this way in part because I didn't know a better way and in part because I couldn't use move-mailbox as the source location had a horrible Internet connection (which is why Exchange is being moved to the new location). I had to copy the EDB from the old server to a hard disk, go somewhere with a better Internet connection, upload the EDB to the new server.

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    How did you do the restore? Any why did you do it that way? – mfinni Nov 10 '13 at 0:29
  • @mfinni see edit – tacos_tacos_tacos Nov 10 '13 at 0:32
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Yikes. What you've done is a bit bizarre and very likely going to cause problems.

I suppose you could try to make things work by modifying the homeMDB, homeMTA, and msExchHomeServer attributes of the subject AD account to refer to the server where you mounted the mailbox database you moved. I think you're in wildly unsupported territory and I wouldn't be surprised if it didn't work out right.

  • Given that I have all the transaction logs and EDB in the target site, is there an alternative procedure I can perform? – tacos_tacos_tacos Nov 10 '13 at 1:00
  • Modify those attributes to refer to the server you've put the database on now-- you may have a shot. You'll probably need to look at a mailbox that's already hosted on that server to get all the values you'll need. – Evan Anderson Nov 10 '13 at 2:00
  • I ended up using the instructions at technet.microsoft.com/en-us/library/bb125087(v=exchg.65).aspx and some other sites to get this done. It worked! (I think) – tacos_tacos_tacos Nov 10 '13 at 4:48
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    I wasn't aware that Microsoft had documented the process of manually re-homing mailboxes. Glad it worked out. – Evan Anderson Nov 10 '13 at 7:02
  • Thanks - I'll never do it that way again though. – tacos_tacos_tacos Nov 10 '13 at 7:16

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