cyrillic domain Invalid mailbox syntax is used.

Hello,
Recently i have moved my website to a cyrillic domain and when i try to fix From field in CF7 with the new domain its not validating it. I have tried with the cyrillic and the latin version of the domain but no luck. Any tips how to solve it ? example of cyrillic domain тест.com (what ppl see) xn--e1aybc.com (punycode version).