I'll cut to the chase, I've got a linux (fc2) dhcp server that I want to use DDNS to update a windows 2003 dns server. So far I get the "Unable to add forward map from <host> to <ip>: timed out" in my logs when the dhcp server hands out an IP.

Here's my sanitized dhcp.conf:

authoritative;
ddns-update-style interim;
ddns-updates on;
ddns-domainname "test.x.x";
ddns-rev-domainname "x.x.x.in-addr.arpa";
allow client-updates;

max-lease-time 220;
one-lease-per-client true;

option domain-name-servers x.x.x.x;

subnet x.x.x.128 netmask 255.255.255.240 {
pool {
deny dynamic bootp clients;
range x.x.x.133 x.x.x.142;
option broadcast-address x.x.x.143;
option subnet-mask 255.255.255.240;
option routers x.x.x.129;
option domain-name-servers x.x.x.132;
option domain-name "test.x.x";
}
}

Any help is appreciated.