Recursive Domain Query on Restricted Recursive DNS

[Nicolas Pence]

Hi, I need to know how to set up the following solution:
 
- I have a Recursive DNS that is restricted to only wanted IP ranges,
running Bind 9.3.2
 
acl mynet { iprange1/mask; iprange2/mask; iprange3/mask; };
 
options {
allow-recursion { mynet; };
allow-query { mynet; };
allow-query-cache { mynet; };
};
 
- But I see some people with my NS configured doing queries to a domain
name that
I really want them to reach, so what I need is to enable queries "only"
to this domain name 
"subdom.example.com" to anybody who query my server like doing:
 
allow-query { any; };
 
- subdom.example.com is not mine so I can't be auth for this domain and
resolve the issue 
setting a master nor a slave zone.
 
 
Is this task possible? 
 
 
thanks in advanced