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Why is the Microsoft Exchange Migration tool sending mailboxes to a database other than the one I select?

Posted on 2015-01-18
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Last Modified: 2015-05-19
When using the MS Exchange Migration tool through the Exchange Admin center (http interface) to move mailboxes, the migration tool sent the mailbox to a completely different database than the one selected.  We have three databases, db1, db2, and spamdb.  We are moving servers to a datacenter offsite.  DB1 and SPAMDB are local to each other (i.e. on the same server) and DB2 is the datacenter.  All mailboxes are on DB1.

When I migrated mailboxes to DB2, some actually went and others went to the SPAMDB.  Now, when I individually select the mailboxes in SPAMDB to migration to DB2, it tells me it migrated fine but I look and they're all still on SPAMDB.

Any suggestions?
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Question by:jhudson1977
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Expert Comment

by:pcmghouse
ID: 40556912
can you please check if you have the database excluded from provisioning. manual moves should work but there is a bug.
get-mailboxdatabase db2|fl isexcludedfromprovisioning
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Author Comment

by:jhudson1977
ID: 40556976
I guess I have another issue I need to figure out first.  I ran the above command and got:

"The operation couldn't be performed because object 'db2' couldn't be found..."
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Accepted Solution

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jhudson1977 earned 0 total points
ID: 40558780
Well, to fix this, I did a crash course in EMS.

I first found out that all of the move requests were getting in the way so I removed all of those using:
     "get-moverequest -movestatus completed|remove -moverequest"

Then, I did a batch move of all mailboxes in "spamdb1" back to "db1" by:
     "get-mailbox -database spamdb1|New-moverequest -BatchName "WhateverINamedIt"

Then, I did another clear of all the move requests using the commands from step 1.

I guess this was set to simply move back to the database on the local server as I didn't specify "db1".  So, in hindsight I would probably specify the target database next time (see command set below).

But, when that was all done, I went to the Exchange Admin Console (web interface) and validated that it saw everything where it was supposed to be.  Then, for giggles, I tried another migration of five small mailboxes using this interface.  It got all wonky again.  So I decided I would use the EMS again for the batch move.

I did one mailbox just to make sure I had the command correct (and it worked) and then went for the whole banana tree using:

     "get-mailbox -database db1|New-MoveRequest -TargetDatabase db2 -BatchName "WhateverYouWantToCallIt"

Everything queued up and the first three moved fine.

So, I guess the moral of the story is learn and use EMS because outside of learning the syntax, it gave me zero headaches.
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Author Closing Comment

by:jhudson1977
ID: 40784721
I accepted my comment as the solution because it worked.  Not sure what else to say.  I included all the code I used in PowerShell to assist others who might run into this issue.
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