Server zimbra sous ubuntu 8.04 Urgent ...????

Bonjour
Voici les étapes
sudo nano /etc/network/interfaces


iface eth0 inet static
address 192.168.1.10
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.1.1

sudo apt-get update

sudo apt-get install bind9 dnsutils file libgmp3c2 libexpat1 libstdc++5 libltdl3 libperl5.8 perl curl libpcre3 libc6

sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl libmd5-perl

cd /
mkdir temp
cd /temp
sudo reboot now


sudo nano /etc/bind/named.conf.options

options {
directory "/var/cache/bind";
query-source address * port 53;
forwarders {
192.168.1.1;
};
auth-nxdomain no; # conform to RFC1035
};


sudo nano /etc/resolv.conf

nameserver 192.168.1.1

sudo nano /etc/bind/named.conf.local

zone "zimmbra.com" {
type master;
file "/etc/bind/db.zimmbra.com";
};


sudo nano /etc/bind/db.zimmbra.com

;
; BIND data file for zimmbra.com
;
$TTL 604800
@ IN SOA mail.zimmbra.com. admin.zimmbra.com. (
100523 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS mail
IN MX 10 mail
IN A 192.168.1.1
mail IN A 192.168.1.1


sudo nano /etc/hosts


127.0.0.1 localhost.localdomain localhost
192.168.1.10 mail.zimmbra.com mail

sudo reboot now


nslookup zimmbra.com

il me donne
server can't find nxdomain pour quoi ??