Update DNS from DHCP problem

Hi all,

Although this is RHEL related problem, I'm sure that someone here also can 
help me.

I run DNS and DHCP on Red Hat ES v3, with all updates. I want to update DNS 
tables from DHCP, so whenever client gets IP address from DHCP, it will 
automatically add it to DNS.

Here is relevant part from named.conf:

zone "pmsl.sd" {
        allow-update { 127.0.0.1; lan; };
        type master;
        file "pmsl.sd.zone";
};
zone "212.29.158.in-addr.arpa" {
        allow-update { 127.0.0.1; lan; };
        type master;
        file "212.29.158.in-addr.arpa.zone";
};

lan is ACL for local network.

DHCP configuration:
ddns-update-style interim;

and in subnet part:
option domain-name-servers      158.29.212.26;

but still I have this message in logs (and of course, DNS is not updated):

Aug 30 08:38:56 pmsl dhcpd: Unable to add forward map from krtws024.pmsl.sd to 
158.29.212.100: connection refused


Any idea ? 
TIA...

Dusan