I'm trying to add a distribution group to Exchange 2010 with the name 'info'. After completion of the wizard, the name and the alias show 'info', but Exchange changes the email address of this new group to 'info2'. When I try to change the email addresses (SMTP and X400), Exchange 2010 responds with 'This command will clear the PrimarySMTPAddress property because the EmailAddressPolicyEnabled parameter is set to true. This action isn't allowed".
I assume somewhere the address info' is already used. I cannot find where that might be -- I've looked in my active directory as well as exchange administration.
What am I missing?