iPad 3 -email account refuse addresses with iOS6

[EJST]

Hello,
I startet my new iPad with iOS 5, so created a new account with an email of this type: <name@xn--stcher-info-uhb.de>. The account installer accepted this address. Now I made an update to iOS 6 actual version. I tried to create an second email like this type. Then the account installer refuses the second email address. What can be happen? What can I do to go around this filter?

 

[leelai]

I've moved your thread to our Help Section where you will receive a better response.

 

[EJST]

Thank You to find help