I've just tested the Radius 2.5 beta and I found something...
if the dial-in user is using an NT station then when the NT-Ras is about to
dial in it ask for the USERNAME,PASSWORD,DOMAIN and by default it is typed
the defaul domain for the NT station and in the calls online the user is
registered as DOMAIN\username so is this a bug or I've missed an option or
a check box.