Hello
I cound't find a solution for my problem. let me explain brifely.
I have a unicode domain in Persian language with a few numbers, as you see in the following image it's not possible to add it in bindings.
Note that it shows the error only for this domain, others which are in unicode without numbers don't have problem.
The domain code is xn--121-nze3cs3g5bg54h.com and real domain is فروشگاه121.com.
I think there is something wrong with IIS 7, I'd appericiate you if you could help me.