Dynamic DNS configuration

[Rob Mortimer]

I am configuring DNS/DHCP on a Mandrake 9.2 machine
Unfortunately I can not get it to work

Can anyone see a problem in my named.conf or dhcpd.conf
(both run on the same machine there is a firewall between the machine
and the internet)

DHCP allocates addresses OK
BIND does not update

Bind is 9.2.3
DHCP is ISC dhcpd 3.0 

-----------------named.conf-----------------------
controls {
	inet 127.0.0.1 port 53 allow {10.0.0.20;127.0.0.1;};
};
options {
		directory "/var/named";
		pid-file "/var/run/named/named.pid";
		forwarders {10.0.0.3;};
     };

    zone "." {
            type hint;
            file "root.hints";
    };

    zone "corp.bc-tech.co.uk" {
            type master;
            file "corp.bc-tech.co.uk.db";
	    // some security
	allow-transfer {127.0.0.1;};
	allow-update {127.0.0.1;};
    };

    zone "0.0.127.in-addr.arpa" {
             notify no;
             type master;
             file "127.0.0.rev";
             allow-transfer { 127.0.0.1; };
     };

     zone "0.0.10.in-addr.arpa" {
	notify no;
             type master;
             file "10.0.0.rev";
	allow-transfer {127.0.0.1;};
	allow-update {127.0.0.1;};
     };

-------dhcpd.conf----------------------------------

default-lease-time 36000;
max-lease-time 144000;
ddns-update-style none;

not authoritative;

subnet 10.0.0.0 netmask 255.255.255.0{
        range  10.0.0.101 10.0.0.175;
        option domain-name              "corp.bc-tech.co.uk";
        option domain-name-servers      10.0.0.20;
        option routers          	10.0.0.3;
        option subnet-mask              255.255.255.0;
		ddns-updates on;
		ddns-domainname "corp.bc-tech.co.uk.";
		ddns-rev-domainname "in-addr.arpa.";

}

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