Delete a disconnected mailbox
Today I needed to remove a mailbox that has been disconnected, but this option isn’t available from the Exchange Management Console so I turned to PowerShell. First, I used the Get-MailboxStatistics cmdlet to generate a list of disabled mailboxes:
Get-MailboxStatistics -Database MBD01 | Where {$_.DisconnectReason -Eq “Disabled”}
or
Get-MailboxStatistics -Database MBD01 | Where {$_.DisconnectReason -Eq “SoftDeleted”}
Then used the Remove-StoreMailbox cmdlet to remove the mailbox:
Remove-StoreMailbox -Database MBD01 -Identity “Ricky Gervais” -MailboxState Disabled