FAILED: Has an address record but no DHCID, not mine.

I am running a little DHCPD/DNS/SQUID server, and after enabling logwatch, I started receiving e-mails in the morning about the following errors :

Dec 18 19:58:06 home dhcpd: Forward map from computername.home.silverhawk.net to 10.0.0.6 FAILED: Has an address record but no DHCID, not mine.

The computername is not a generic DHCP client - it is a host with a statically assigned address.  This message is somewhat annoying.  To remediate this, I have now added a "ddns-update-style none;"  to each host with a static address, e.g. :

host computername {
        hardware ethernet       00:25:8c:7f:ef:01;
        fixed-address           10.0.0.6;
        ddns-update-style       none;
}

I may just turn off the dynamic updates all together.  I am not sure they are as important as I initially thought.  We'll see if this will swallow the error first, though.