Unable to mount Exchange 2007 database

After restoring an Exchange 2007 server from a backup to a test ESXi VM I was unable to mount the Exchange mailbox database:

Failed to mount database ‘Mailbox Store’.

Error:
Exchange is unable to mount the database that you specified. Specified database: SERVER1\First Storage Group\Mailbox Store; Error code: MapiExceptionJetErrorAttachedDatabaseMismatch: Unable to mount database. (hr=0x80004005, ec=-1216)

To fix this I used:

eseutil -p “Mailbox Store.edb” 
eseutil /r E02 /i

(in the directory that contains the database)

!The first command is said to be able to cause the loss of data. So only run this on a backup database!

Source:

http://blog.dunk.tk/blog1.php/2009/06/17/unable-to-mount-exchange-2007-database

Mailbox doesn't appear on Disconnected Mailbox after disabling it

Sometimes when you disable a mailbox you click o Disconnected Mailbox and can't see the mailbox that you've just disabled.

To see the hidden disconnected mailbox run the following cmdlet on the mailbox server that hosts the mailbox:

Clean-MailboxDatabase “Database Name”

After running the cmdlet return to EMC and refresh Disconnected Mailbox, then you'll see the mailbox there.

Source:
http://exchangeshare.wordpress.com/2008/04/27/cant-see-deleted-mailbox-in-disconnected-mailbox-under-recipient-configuration/