Lame DNS servers - HELP!

; Template for pam.org.uk.hosts file
; If web, DNS and mail are hosted on phantom, you probably do not
; need to edit this file unless you need to add other host names.
; If there is no web server, DELETE the last line with the A record
; for www.
; Comments may be deleted.

$TTL    60840
@humgun.com.    IN      SOA     ns1.humgun.com  ns2.humgun.com. dns0.xylene.com$
                        ; Serial Number: used by the slave DNS server as a
                        ; guide to know if the domain has changed
                        ; Refresh: used by the slave DNS server to
                        ; determine how often to update it's copy
                        ; Retry: tells the slave DNS server how often
                        2004052600      ; Serial (the last time this
                                        ; database was updated)
                        14400           ; Refresh (4 hours) (how often to
                                        ; update)
                        3600            ; Retry (1 hour) (how often to
                                        ; retry a failed update)

                                        ; updated)
                        86400 )         ; Minimum (1 day) TTL of this database.

                        ; These set up the primary and secondary
                        ; DNS servers for the domain.
        IN      NS      ns1.humgun.com.
        IN      NS      ns2.humgun.com.
        IN      NS      dns0.xylene.com.

                        ; MX records point to a primary and a
                        ; backup mail server.  One MX record for
                        ; each mail server.  Higher number means
                        ; lower preference.  The servers listed
                        ; MUST be set up to handle mail for this
                        ; domain!
        IN      MX      10      mail0.xylene.com.
        IN      MX      20      mail1.xylene.com.


                        ; This one sets up an IP address for the
                        ; domain name itself.  If someone simply
                        ; types whatever.com they'll get this
                        ; address.  Note that this may hose up
                        ; things if the MX record points somewhere
                        ; else - or maybe not.
ns1     IN      A       81.171.135.187
ns2     IN      A       212.159.50.34

zone "humgun.com" {
        type master;
                file "/etc/bind/zones/humgun.com";
        };