ns_initparse: Message too long

[groar]

Hello,

I have a domain in .org, let's say it's called test.org . Zones
transferts between secondary and primary are OK.
In my primary server I defined :
www             IN      CNAME   shell1.sourceforge.net.
When I type :

. dig @secondary www.test.org
  the good reply is made.

. dig @primary www.test.org
  the following reply is printed :
	;; res options: init recurs defnam dnsrch
	;; got answer:
	;; ns_initparse: Message too long
	;; Total query time: 207 msec
  and the primary logs :
  security: notice: unapproved query from [ex.te.rn.al].1171 for
"shell1.sourceforge.net"

The primary is configured rather stricly. /etc/named.conf extracts :
acl mynetworks {
          // Host that can query anything
...
};
acl blockblackhole {
...
};
acl mysecondaries {
...
};
options {
...
        directory "/bind";
        blackhole { blockblackhole; };
        allow-query {
          mynetworks;
        };
        allow-transfer {
          mynetworks;
        };
};
...
zone "test.org" {
        type master;
        file "p/test.org";
        // We must respond to any query on this zone
        allow-query {
          any;
        };
        // Limit transfer from inside and secondaries;
        allow-transfer {
          mynetworks;
          mysecondaries;
        };
};
...

Is it a bug or a misconfiguration ?
How can I make it work without allowing the primary to resolve external
domains for external clients ?

Thanks in advance,

Denis.

-- 
Groar Project :
http://sourceforge.net/project/filelist.php?group_id=1239
      dducamp at users.sourceforge.net -- http://groar.sourceforge.net
             groar at groar.dyndns.org -- http://groar.is.dreaming.org