I'm going to be moving a large number of mailboxes in the next week, so I decided to leverage the MoveMailbox script provided with Exchange 2010. When I run execute the script in our test environment (parameters being used are below), I receive an error stating; "Cannot write input as there are no more running pipelines" and "No moves could be started. Please make sure you have at least one Exchange 2010 Client Access server in the site." I of course have a CA server.
The commands I've executed:
.\MoveMailbox.ps1 -MailboxDatabase "2007servername\first storage group\2007 mailbox database name" -TargetDatabase "2010 mailbox database name"
.\MoveMailbox.ps1 -MailboxDatabase "2007servername\first storage group\2007 mailbox database name" -TargetDatabase "2010servername\2010 mailbox database name"