Unable to create Outlook Custom Domain

10. November 2013 · Write a comment · Categories: Hotmail, Outlook.com · Tags: , ,
I want to use outlook for my custom domain, but domain name contains Polish diacritic characters. I have tried both versions of IRI and URI.
With IRI (sołtysik.net.pl) I see error message like this: We don't recognize this as a valid domain name.
and with URI (xn--sotysik-ojb.net.pl): This domain name can't be used because it contains a protected word or inappropriate language. Please contact support if you feel this is not the case.

It is my private domain, not for comercial use.

Can you help me with this?