Thanks for a great product, IspConfig 3. I am using IDN domains in Russian .рф zone. .рф in Puny Code is .xn--p1ai IspConfig does not accept that. I had to modify the entry through MySQL Database. Please add support for Puny Code top level domains, that should be a quick fix. Also, internal Puny Code support would also be great. When entering a new DNS zone/DNS records and when displaying it.