1. Create a Recovery Database
To recover mailboxes, create a recovery database as described below.
1. Launch the Exchange Management Shell to restore the mailbox. Go to Start 
(All) Programs Microsoft Exchange Server 2010 Exchange Management Shell.
2. The Exchange Management Shell screen will open.
3. Use the New-MailboxDatabase command to create a mailbox database object in the database container in the Active Directory. For detailed syntax and parameter information, see http://msdn.microsoft.com/en-us/library/aa997976(v=EXCHG.140).aspx.
In our example, we restore the C:\test\RecoveryDB.edb file using the following command:
2. Use CDP Restore
Use CDP to restore a Microsoft Exchange 2010 Mailbox to an alternate location. See details in Restoring a Microsoft Exchange 2010 Database to an Alternate Location.
 | Notice Use the database created above to map against the Recovery Point Exchange database. |
3. Mount the Recovery Database
Mount the database if it was not already mounted by the CDP alternate restore.
To mount "RecoveryDB," use the Mount-Database command. For detailed syntax and parameter information, see http://msdn.microsoft.com/en-us/library/aa998871(v=EXCHG.140).aspx. In our example, we use the following command:
1. Use the Get-MailboxStatistics command 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. For detailed syntax and parameter information, see http://msdn.microsoft.com/en-us/library/bb124612%28ru-ru,EXCHG.140%29.aspx.
2. Extract mailbox content from a restored database using the "Restore-Mailbox" command. The -RecoveryDatabase parameter specifies the recovery database from which you are restoring the mailbox. In the following example, we restore a "MargeSimpson" mailbox. More parameters for "Restore-Mailbox" can be found here: http://msdn.microsoft.com/en-us/library/bb125218.aspx
