Find out what permissions a user has to Exchange 2007 Mailboxes

Sometimes you just need to know what user "X" has rights to in your Exchange Mailboxes.

Where a user has been specifically assigned, minus their own mailbox, it shouldn't show their own mailbox anyways because that should be NT AUTHORITY\Self.

Using Powershell.

Get-Mailbox | Get-ADPermission | where {($_.User -like “*Brian*”)} ft -wrap

Now for some reason this only returns "Send As" permissions (guess those are in AD). If you want others you have to use get-mailboxpermission

Get-Mailboxpermission * -user domain\user.name | format-list


Thanks to these articles for setting me in the right direction.
http://exchangeshare.wordpress.com/2008/09/01/how-to-find-all-mailboxes-with-send-as-permission-assigned/

http://exchangepedia.com/blog/2008/02/how-to-list-mailboxes-with-full-mailbox.html