Help with DNS configuration (master and slave server)

Hello.

I like to set up 2 dns servers and got some problems.
It seems like the slave server dont get the data transfered from my master.

Master has ip 213.88.xxx.zzz
slave has has ip 213.88.xxx.yyy

In the log of the master server I can se:
Nov  5 08:10:48 hubba named[24393]: client 213.88.xxx.yyy #63610: query (cache) denied

Here is the configuration for the master:

key "key" {
        algorithm       hmac-md5;
        secret
"c3Ryb25nIGVub3VnaCBmb3IgYSBtYW4gYnV0IG1hZGUgZm9yIGEgd29tYW4K";
};

controls {
    inet 127.0.0.1 allow { any; } keys { "key"; };
};


options {
        directory "/var/named";
        forwarders { xxx.yy.z.bb; xxx.yyy.z.cc; };
        allow-query { 213.88.xxx.aaa/29; 192.168.1.0/24; localhost; };
        forwarders { xxx.yy.z.bb; xxx.yyy.z.cc; };
        allow-recursion { 213.88.xxx.aaa/29; 192.168.1.0/24; localhost; };


        // query-source address * port 53;
};

logging {
        category lame-servers { null; };
        category update { null; };
};

zone "." {
        type hint;
        file "named.ca";
};

zone "0.0.127.in-addr.arpa" {
        type master;
        file "named.local";
};


zone "hubba.com" {
        notify no;
         allow-query { any; };
         allow-transfer { 213.88.xxx.yyy; localhost; };

       type master;
        file "named-hubba";
}



and for the slave:

// generated by named-bootconf.pl


// secret must be the same as in /etc/rndc.conf
key "key" {
        algorithm       hmac-md5;
        secret
"c3Ryb25nIGVub3VnaCBmb3IgYSBtYW4gYnV0IG1hZGUgZm9yIGEgd29tYW4K";
};

controls {
    inet 127.0.0.1 allow { any; } keys { "key"; };
};


options {
        pid-file "/var/run/named/named.pid";
        forwarders { xxx.yy.z.bb; xxx.yyy.z.cc; };
        allow-query { 213.88.xxx.aaa/29; 192.168.1.0/24; localhost; };
        allow-recursion { 213.88.xxx.aaa/29; 192.168.1.0/24; localhost; };
        allow-transfer { 213.88.xxx.zzz; localhost; };

        directory "/var/named";
        /*
         * If there is a firewall between you and nameservers you want
         * to talk to, you might need to uncomment the query-source
         * directive below.  Previous versions of BIND always asked
         * questions using port 53, but BIND 8.1 uses an unprivileged
         * port by default.
         */
        // query-source address * port 53;
};



logging {
        category lame-servers { null; };
        category update { null; };
};
zone "." {
        type hint;
        file "named.ca";
};

zone "0.0.127.in-addr.arpa" {
        type master;
        file "named.local";
};

zone "hubba.com" {
        type slave;
        allow-query { any; };
        allow-transfer { 213.88.xxx.zzz; localhost; };

        file "named-hubba";
        masters { 213.88.xxx.zzz; };
};