I'm trying to do a remote mailbox move, from an Exchange 2013 SP1 org to an Exchange 2010 SP3 Update Rollup 7 one. However I'm presented with the error message The remote server doesn't support client 'Exch1.fabrikam.com' version (14.3.178.0 caps:05FEFF). Missing functionality: 'TenantHint'. Exch1.fabrikam.com is the name of the CAS server in the Exchange 2010 org.

The cmdlet being used is: New-MoveRequest -Identity frank -Remote -RemoteCredential $RemoteCredentials -RemoteGlobalCatalog dc1.contoso.com -TargetDatabase Global1 -TargetDeliveryDomain fabrikam.com -Verbose -RemoteHostName Exch1.contoso.com.

There is also a similar thread here, but it never got solved.

Although I'm finding it hard to believe - is this something that's not officially supported ?

• Edited by Albert Mihai Friday, June 05, 2015 4:21 PM

Hi,

Please make sure the MRS proxy is enabled for cross forest move in the target domain:
Set-WebServicesVirtualDirectory -Identity "Exch1.fabrikam.com\ews (default web site)" -MRSProxyEnabled $true

Please clear all the move requests from the recipients/migration area and then do the remote move to have a try.

Regards,

Winnie - I forgot to mention that the MRS proxy is enabled on the source forest (the attempt was a 'pull' move request as presented in this Technet article, initiated from the target forest fabrikam.com).

Also, since the New-MoveRequest never completed successfully, there was no previous entry for this move request, so I couldn't delete another conflicting entry.

Got this solved with Microsoft Premier Support. Basically a couple of Microsoft PFEs drafted a document about mailbox moves between various Exchange versions and under different scenarios. That document is here. Turning to page 80 it's clearly stated that, for 2013->2010 cross-forest "You cant use the PowerShell on the target forest to pull to the mailbox"; instead a "push" move has to be used. Hence the cmdlet changes to the entry below, and is instead ran in the source forest:

New-MoveRequest -Identity frank -Outbound -RemoteTargetDatabase Global1 -RemoteHostName CAS1.fabrikam.com -RemoteCredential $RemoteCredentials -TargetDeliveryDomain fabrikam.com -Verbose