i have 2 different domains in diefferent forrest companya.local and companyb.local company a has 2 exchange servers that are exchange 2007, 1 server is a client access and the other is the mailbox server company b has 2 exchange servers that are exchange 2010, 1 server is a client access and the other is the mailbox server how can i move the mailboxes from the 2007 exchange to the 2010 exchange?Danny G Guillory Jr.

1. The AD account has to exist in the target forest. You can either use ADMT to bring it over if you need SID history. If you don't care about SID history then you can run prepare-moverequest which will provision the mail enabled user. Example syntax below .\Prepare-MoveRequest.Ps1 -Identity "CN=migusr5,OU=Office,DC=ipcfcdom,DC=inphonic,DC=com" -RemoteForestDomainController "dcfcdc03.ipcfcdom.inphonic.com" -RemoteForestCredential $Remote -LocalForestDomainController "eqdcp01.corp.dom" -LocalForestCredential $Local -TargetMailUserOU "OU=FromILM,OU=GALSync,DC=corp,DC=dom" -UseLocalObject 2. Migrate the mailbox once the AD user has been provisioned in step 1. New-MoveRequest -Identity "CN=migusr5,OU=FromILM,OU=GALSync,DC=corp,DC=dom" -RemoteLegacy -TargetDatabase "mdb01 tier1" -RemoteGlobalCatalog "dcfcdc03.ipcfcdom.inphonic.com" -RemoteCredential $Remote -TargetDeliveryDomain "simplexity.com" Exchange 2010 Cross-Forest Mailbox Moves http://msexchangeteam.com/archive/2010/08/10/455779.aspx James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com