my DNS server doesn't remove don't existing machines

cccc · 01-01-2005, 03:30 PM

hi

I've installed the linux BIND 9.2.1 DNS server for the NT4/WIN2000/linux area network.
All WIN2000 machines register themselves (with fixed IP addresses) or via DHCP (reverse entries included) on the linux BIND DNS server automatically.

But I can find DDNS Entries from some WIN2000 client machines don't existing since 1 or 2 months.
How to solve this problem ?
I mean, if the machine doesn't exist anymore, the DDNS entry should be deleted automatically.

config file:

Code:

options {

directory "/var/lib/named";

auth-nxdomain yes;
multiple-cnames no;
cleaning-interval 60;
datasize default;
stacksize default;
coresize default;
files unlimited;
#recursion yes;

forwarders { X.X.X.X; X.X.X.X; X.X.X.X; };
forward first;

listen-on port 53 { 127.0.0.1; 10.30.1.10; };
listen-on-v6 { any; };

notify no;
};

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


zone "localhost" in {
type master;
file "localhost.zone";
};

zone "0.0.127.in-addr.arpa" in {
type master;
file "127.0.0.zone";
};


/Zone entry for domain xxxx.net.
zone "xxxx.net" {
type master;
file "/var/named/xxxx.net.hosts";
allow-update { 10.30.0.0/22; };
};

zone "0.30.10.in-addr.arpa" {
type master;
file "/var/named/10.30.0.rev";
allow-update { 10.30.0.0/22; };
};

zone "1.30.10.in-addr.arpa" {
type master;
file "/var/named/10.30.1.rev";
allow-update { 10.30.0.0/22; };
};

zone "2.30.10.in-addr.arpa" {
type master;
file "/var/named/10.30.2.rev";
allow-update { 10.30.0.0/22; };
};

zone "3.30.10.in-addr.arpa" {
type master;
file "/var/named/10.30.3.rev";
allow-update { 10.30.0.0/22; };
};