Thursday, July 3, 2008

Purging Mailboxes in Exchange 2007

We all know how vastly different Exchange 2007 Management Console (EMC) is from Exchange System Manager (ESM) in Exchange 2003. The other day I had to test a migration for work and realized that I no longer have an easy ability to purge mailboxes through EMC just like I used to in ESM:

Under the hood, selecting Purge in ESM calls Exchange_Mailbox.Purge method.
In Exchange 2007, WMI is gone. So Powershell comes to the rescue.
After reviewing "Remove-Mailbox" reference at TechNet
, it sounds like "-Permanent" should be piped when removing the user and that's it. However, things are not that simple.
If mailbox is already disassociated, then I can query a list of disconnected mailboxes like this:
Get-MailboxStatistics | ?{ $_.DisconnectDate -ne $null}
Now, I need to pipe the "Remove-Mailbox", but which parameters do I choose?
It took me some mocking around but it turns out this is what you need:
Get-MailboxStatistics | ?{ $_.DisconnectDate -ne $null} | `
{ Remove-Mailbox -Database "Mailbox Database" `
$_.MailboxGuid -WhatIf:$false}

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