After adding a new Exchange 2010 DB - BES users no longer work once moved to it

By default it would appear that BES doesnt have permission to access a new Exchange Database.  In this Blackberry knowledge base article recommend using powershell to update the permissions on all mailboxes on a server.


For Microsoft Exchange 2010

1. Click Start > Programs > Microsoft Exchange Server 2010 > Exchange Management Shell.
2. Open the command prompt as administrator, type the following line and then press ENTER:
   Get-MailboxDatabase | Add-ADPermission -User "BESAdmin" -AccessRights ExtendedRight -ExtendedRights Receive-As, ms-Exch-Store-Admin