Newbie: Troubles with dns zone file

[InterIp Networks]

Hai

I have some troubles with my primary nameserver ns1.interregister.com, al
the domains that i make wil not updated by the secondary nameserver
ns2.widexs.net. The gay's from widexs say's that my server have bad dns zone
file's for the domain wich i have created . I'm using Redhat 6.1 kernel
2.2.14

A example of my zone file voor domain:
$ORIGIN cadstore.nl.
@               IN      SOA     ns1.interregister.com.
hostmaster.interregister$
                                2000011101      ;serial
                                14400           ;refresh after 4 hours
                                3600            ;retry after 1 hour
                                604800          ;expire after 1 week
                                86400   )       ;minimum TTL of 1 day
;       Nameservers
;
        IN      NS      ns1.interregister.com.           ;
        IN      NS      ns2.widexs.net.                  ;
;
;       Domain Mail Handlers
;
cadstore.nl.           IN      MX      10      mail
;
;
; hosts in order
;
localhost                       IN      A       127.0.0.1
cadstore.nl.                   IN      A       212.204.219.71
www                             IN      A       212.204.219.71
ftp                             IN      A       212.204.219.71
*                               IN      A       212.204.219.71
pop                             IN      CNAME   mail
mail                            IN      A       212.204.219.71
;
; end

If I do a nslookup i get the following:

> cadstore.nl
Server:  ns1.interregister.com
Address:  212.204.219.61

cadstore.nl     preference = 10, mail exchanger = mail.cadstore.nl
cadstore.nl     nameserver = ns1.interregister.com
cadstore.nl     nameserver = ns2.widexs.net
cadstore.nl
        origin = ns1.interregister.com
        mail addr = hostmaster.interregister.com
        serial = 2000011101
        refresh = 14400 (4H)
        retry   = 3600 (1H)
        expire  = 604800 (1W)
        minimum ttl = 86400 (1D)
cadstore.nl     internet address = 212.204.219.71
cadstore.nl     nameserver = ns1.interregister.com
cadstore.nl     nameserver = ns2.widexs.net
mail.cadstore.nl        internet address = 212.204.219.71
ns1.interregister.com   internet address = 212.204.219.61
ns2.widexs.net  internet address = 212.204.207.192

> cadstore.nl
Server:  ns2.widexs.net
Address:  212.204.207.192

Non-authoritative answer:
cadstore.nl.interregister.com   internet address = 212.204.219.61

Authoritative answers can be found from:
interregister.com       nameserver = NS2.WIDEXS.NET
interregister.com       nameserver = NS1.interregister.com
NS2.WIDEXS.NET  internet address = 212.204.207.192
NS1.interregister.com   internet address = 212.204.219.61

Why get I a non-authoritative answer ?, When i want to register this name in
the netherlands i get a Dns error back from nic.nl.

Thank you

Mesut