DNS세팅했는데 외부에서는 작동을 안해요!

// generated by named-bootconf.pl

options {
        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;
};

//
// a caching only nameserver config
//
controls {
        inet 127.0.0.1 allow { localhost; } keys { rndckey; };
};
zone "." IN {
        type hint;
        file "named.ca";
};

zone "localhost" IN {
        type master;
        file "localhost.zone";
        allow-update { none; };
};

zone "0.0.127.in-addr.arpa" IN {
        type master;
        file "named.local";
        allow-update { none; };
};

zone "200.200.200.in-addr.arpa"{
      type master;
      file "hyojung.com.rev";
      allow-update { none;};
};

zone "hyojung.com"{
      type master;
      file "hyojung.com.zone";
      allow-update { none;};
};

include "/etc/rndc.key";

 $TTL 86400
$ORIGIN hyojung.com.
@ IN SOA ns.hyojung.com. root.ns.hyojung.com. (
         1997022700    ; Serial
         28800         ; Refresh
         14400         ; Retry
         3600000       ; Expire
         86400 )       ; Minimum

 IN NS ns.hyojung.com.
 IN NS localhost.

200 IN PTR ns.hyojung.com.
200 IN PTR localhost.

 $TTL 86400
@ IN SOA ns.hyojung.com. root.ns.hyojung.com. (
         3           ; Serial
         28800       ; Refresh
         7200        ; Retry
         604800      ; Expire
         86400       ; ttl
         )

 IN NS  ns.hyojung.com.
 IN NS  localhost.
 IN A   200.200.200.200
 IN MX  10 hyojung.com.

localhost. IN A 127.0.0.1
           IN A 200.200.200.200
 ns         IN A 200.200.200.200
 www        IN A 200.200.200.200