Removing disconnected mailboxes in Exchange Server 2007

Article Source
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MSFT:

Description:	Removes a given user from AD and disconnects their Mailbox
Comamnd:	Remove-Mailbox -Identity contoso\john
Description:	Removes a given user from AD and purges their mailbox from the database
Command:	Remove-Mailbox -Identity contoso\john -Permanent $true
Description:	Purges from the database a single already disconnected mailbox. Uses Get-MailboxStatistics to get the identity of the user before passing to remove-mailbox
Command:	$Temp = Get-MailboxStatistics | Where {$_.DisplayName -eq 'John Peoples'} Remove-mailbox -Database Server01\Database01 -StoreMailboxIdentity $Temp.MailboxGuid

Addtional:

Description:	Removes all disconnected Mailboxes from a Database
Command:	Get-MailboxStatistics -database "server\database" | where {$_.disconnectdate -ne $null} | foreach {Remove-mailbox -database $_.database -storemailboxidentity $_.mailboxguid}

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Addtional Info - Article Source
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Exchange Server 2007 doesn't allow us to purge the disconnected mailbox. In order to remove one or multiple disconnected mailboxes we can be performing these steps:

Listing all disconnected mailboxes

Get-MailboxStatistics | where-object { $_.DisconnectDate -ne $null } | Select DisplayName,MailboxGuid

Removing a single entry

Remove-Mailbox -Database -StoreMailboxIdentity -confirm:$false

Removing all users at the same time

$users = Get-MailboxStatistics | where-object { $_.DisconnectDate -ne $null } | Select DisplayName,MailboxGuid

Now that we have all disconnected mailboxes in a var, we can run the following cmdlet to remove all of them:

$users | ForEach { Remove-Mailbox -Database "Mailbox Database" -StoreMailboxIdentity $_.MailboxGuid -confirm:$false }
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