dns delegation and recursion

[Στέλλα Κορακάκη]

Hi all.

I have an authoritative only dns server running bind 9.
Is there any way I can permit recursion for specific zones?
For example I have a zone example.com which delegates some sub domains
to other nameservers.
sub.example.com.	IN NS other.dns.server.

I prefer not to enable recursion globaly.


thanx