caching only + wildcard

[idanj]

Hello all,

We have 2 BIND name servers configured as "caching-only".

Is it possible to set a wildcard A record ("catch all") on a these
name server?

The problem is that when the server gets a query for a domain that
doesn't exist in its cache, the server will return the wildcard reply
instead of checking the root servers first.

The name server is running BIND 9.
Can this be done without modifying the BIND code ?

Thanks in advance
Idan