I have been unable to find the right format for the Identity paramater of the set-user cmdlet. Is there a way to determine the format needed?

please refer to the following URL http://technet.microsoft.com/en-us/library/aa998221.aspx

I tried all of the Identity descriptions listed except the Guid and the Legacy Exchange DN but I get user not found. I am logged on as an exchange full admin. GUID Distinguished name (DN) Domain\Account User principal name (UPN) Legacy Exchange DN Simple Mail Transfer Protocol (SMTP) address Alias

What version of exchange 2007 you installed? What exact cmdlet you used?

Version: 08.00.0685.018 I finaly got rid of the error when using the get-mailuser when I used the Legacy Exchange DNI changed my storage limit on my user account and ran the following command. It didn't show any errors or any information but left me at a prompt >> >> get-mailuser -identity 'My Legacy Exchange DN'| format-list