DNS entry for subdomain with other nameservers

Hello all,

I'm trying to add a subdomain with external nameservers.

For example:

Domain hosted at my machine: abc.nl
Subdomain created on my machine: nl.abc.nl with as example ns1.xyz.com and ns2.xyz.com.

This is not working.

When I'm creating test.abc.com with as example ns1.xyz.com and ns2.xyz.com, this is just working perfect.

Is someone recognizing this issue?

Anyone?

It seems nobody recognizes the issue, so you'd better provide real names so we could check it remotely from our sides.

Thank you for your response.

Strange enough for one domain it's working now after I have changed the .db file (nameserver file) of the domain.

I just changed the hierarchy and put this NS rule on top for the subdomain.
Tried this for another domain aswell, if this will work I'll put the complete story in the forum.