Originally Posted by YbeddyJ
could this be a untold(at least to me) feature of bind to not allow you to become authoritative for a domain that exist somewhere else?
That'S how it's supposed to be. When you register a domain, you can tell the registrar which nameservers you want to use. These nameserver become the authoritative nameservers for the domain, and it makes no sense to create the zone on other nameservers.