strange dig behavior

[Pamela Rock]

I've got the following three scenarios

The client can query a domain A residing on a recursive name server.

The client can query a domain B on an authratative name server.

When client queries domain B through the RNS, a Status: refused results.

I don't know what is causing the refused.  IP tables is off everywhere, and there are no ACL's on routers or firewalls.  

The only error I'm seeing is the following in the debug log

20-Dec-2009 19:21:09.443 query-errors: debug 3: client 172.16.0.5#41484: query failed (REFUSED) for test.com/IN/A at query.c:3882

I'm running bind 9.6.1 on RH ES 5 64 bit O/S.  Any ideas?  Thanks!!