How so we know that previously certain mailbox say UserA based on which mailbox database. Let say, UserA at DatabaseB and maybe/maybenot move from different database.
I saw http://technet.microsoft.com/en-us/library/bb124612(v=exchg.141).aspx
for Exchange 2010
Use the Get-MailboxStatistics cmdlet to obtain information about a mailbox, such as the size of the mailbox, the number of messages it contains, and the last time it was accessed. [b]In addition, you can get the move history or a move report of a completed move request.[/b]
Any cmdlet for Exchange 2007