Legacydn.exe: great tool idea, but only in a Lab???

In a MS KB324606 Article posted yesterday, Microsoft shows us a new tool, but don't try to use it in production if there are more than one DC.

 

Summary:

Legacydn.exe is a tool that you can use to perform the following tasks:

•	Change the Microsoft Exchange 2000 Server or Microsoft Exchange Server 2003 organization name.
•	Change the administrative group names.
•	View the legacyExchangeDN values.
•	Change the legacyExchangeDN values.

Note Microsoft only supports using the Legacydn tool in a lab environment. The tool works only in a single domain controller environment.