I have a small network with two DC's, each with a DNS server, and a single DHCP server. Both are running Windows Server 2008 R2 and standard Microsoft DNS services. Everything has been working fine for years. Our company website as undergone a rewrite and is now hosted on a remote location that doesn't have a dedicated IP address (previously, we had a dedicated IP on our remote web server).
When our internal domain was set up years ago, it was setup with the same name as our internet domain. To make a long story short, I was able to get access to our new web site from inside the domain by adding @ and www records to the DNS as shown below.
(same as parent folder) Name Server (NS) Backupdc.mydomain.com.
(same as parent folder) Name Server (NS) dcfs.mydomain.com.
(same as parent folder) Host (A) 166.62.110.232
www Alias (CNAME) mydomain.com
This worked, but after a few hours it would stop working and looking at the DNS entries, I had some new values.
(same as parent folder) Name Server (NS) Backupdc.mydomain.com.
(same as parent folder) Name Server (NS) dcfs.mydomain.com.
(same as parent folder) Host (A) 192.168.30.17
(same as parent folder) Host (A) 192.168.30.20
(same as parent folder) Host (A) 166.62.110.232
www Alias (CNAME) mydomain.com
The new entries were the IP addresses of my two DNS servers. I was able to stop this from happening by changing Dynamic Updates to None, but this also prevents new systems from being added by the DHCP server.
Is there any way to allow DHCP to add new records to the DNS without having the @ records added for the DNS servers?