From now the german registrar allows domain names with
Umlaut-characters like ö,ä and ü.
The scripts create_master.cgi, create_slave.cgi and
create_forward.cgi implement a check against this
characters which makes it impossible to create zones
with those characters.
Logged In: YES
user_id=129364
This is more of a feature request than a bug.
At the moment, you would need to manually convert the domain
name to the 'real' IDN format like
xn--blahbdfsfdsfd.com
before creating it in Webmin.