[SOLVED] 4th Level Domain

[trampi]

HAS BEEN SOLVED

Hello, lets say i have a server wich is reachable under testserver.example.com.
I have ISPCP running on it and i do not want to use real domains, but subdomains.

something like mydomain.testserver.example.com

If i want to add such a domain i get the following error:
"Wrong domain name syntax or number of labels"

Any idea where i could tweak a setting to allow such domains?

I think it is possible because my admin panel runs on admin.testserver.example.com

Thanks in advance.

SOLUTION
First of all: sorry for not looking properly in the admin interface.
There is a setting called "Maximal number of labels for domain names" - if i set it to a higher value everything i want works fine.

I hope that i've maybe helped someone.