I'm doing inter-forest migration between two Microsoft small business servers (2008 R2, Exchange 2010)
I'm following mostly these two sources:

http://technet.microsoft.com/en-us/library/ee861103.aspx

and

http://blogs.technet.com/b/exchange/archive/2010/08/10/3410619.aspx

During test migration (single mailbox) I got following error. Google found no sources referring similar errors
[PS] C:\Program Files\Microsoft\Exchange Server\V14\Scripts>./Prepare-MoveRequest.ps1 "CN=Toomas Tibu,OU=SBSUsers,OU=Use
rs,OU=Navirec,DC=local,DC=track,DC=ee" -RemoteForestDomainController sbs.local.track.ee -RemoteForestCredential $RemoteC
redentials -LocalForestDomainController int.navirec.com -LocalForestCredential $LocalCredentials -TargetMailUserOU "OU=S
BSUsers,OU=Users,OU=Navirec,DC=int,DC=navirec,DC=com" -UseLocalObject
Appending x500:/o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=Toomas Tibu to
proxyAddresses of New Object in Local forest.
C:\Program Files\Microsoft\Exchange Server\V14\Scripts\Prepare-MoveRequest.ps1 : Error while creating MEU. Error:Error
creating mailuser CN=Toomas Tibu,OU=SBSUsers,OU=Users,OU=Navirec,DC=int,DC=navirec,DC=com in local forest or setting it
s mandatory attributes. Error: Exception calling "SetInfo" with "0" argument(s): "Access is denied.
"
At line:1 char:26
+ ./Prepare-MoveRequest.ps1 <<<< "CN=Toomas Tibu,OU=SBSUsers,OU=Users,OU=Navirec,DC=local,DC=track,DC=ee" -RemoteFores
tDomainController sbs.local.track.ee -RemoteForestCredential $RemoteCredentials -LocalForestDomainController int.navire
c.com -LocalForestCredential $LocalCredentials -TargetMailUserOU "OU=SBSUsers,OU=Users,OU=Navirec,DC=int,DC=navirec,DC=
com" -UseLocalObject
+ CategoryInfo : NotSpecified: (:) [Write-Error], WriteErrorException
+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Prepare-MoveRequest.ps1
Local user is allmighty admin created during SBS installation. Target domain is shiny, brand-new freshly out of installer. No users or any configuration except necessary preparations for using ADMT (trusts, DNS).

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You might want to post this in the SBS Forum:
http://social.technet.microsoft.com/Forums/en/smallbusinessserver/threadsEd
Crowley MVP "There are seldom good technological solutions to behavioral problems."

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You might want to post this in the SBS Forum:
http://social.technet.microsoft.com/Forums/en/smallbusinessserver/threadsEd
Crowley MVP "There are seldom good technological solutions to behavioral problems."

Need to support users over the internet? click here try our remote control online beta