dhcp server problem !!

[mozilla]

i have a dhcp server runs on linux server. this server works as a proxy server for a private network
the /etc/dhcpd.conf has the configuration:

option domain-name "my-network.net";
option domain-name-servers 10.0.0.1;
option routers 10.0.0.1;
ddns-update-style interim;
ddns-updates on;
ignore client-updates;
default-lease-time 259200; # 3 days
max-lease-time 604800; # 1 week
authoritative ;
subnet 10.0.0.0 netmask 255.255.255.0 {
range dynamic-bootp 10.10.10.2 10.10.10.100;
}
host tech {
hardware ethernet <mac addr of tech>;
fixed-address 10.0.0.235;
}

when i try to start dhcp server it fails , and gives me the error:
.
.
No subnet declaration for eth-<mac address of the external card> (0.0.0.0).
** Ignoring requests on eth-<mac address of the external card>. If this is not what
you want, please write a subnet declaration
in your dhcpd.conf file for the network segment
to which interface eth-<mac address of the external card> is attached. **

Not configured to listen on any interfaces!
help please!!

[FyberOptyx]

I could be wrong as it was a few years ago when I set mine up but I think I remember getting a similar error message.
I think I had to do something like the following (as I say, could be mistaken):
your dns setup:

zone 1.168.192.in-addr.arpa. {
        primary 192.168.1.1;
}
zone bits-n-pieces.co.uk. {
        primary 192.168.1.1;
}

The rest of it looks pretty similar to mine tho