Brief Description
 

This tool will allow you to forcibly remove the Exchange attributes from a user account in Active Directory.

Overview
 

This tool is destructive! – it will forcibly disassociate a mailbox from its AD account – this process is not easily reversible and should not be performed unless you have a good reason.

This is very much use at your own risk – neither Microsoft nor I will be able to support you if something goes wrong – it should only be used in the most severe of circumstances – you have been warned!

System Requirements
 

• NET 2.0
• Exchange 2007 / Exchange 2010 (tested against the RC build)

Download
 

You can download the tool from the following location:

Remove Exchange Attributes Tool – Version 1.0 – [11KB]

It should be downloaded into “c:\RemoveExchangeAttributes” – on either a Domain Controller within the Domain where the previous mailbox server was resident or onto the new Exchange Server.

Instructions
 

Please the following article here