I have a Windows 2008 R2 server and Windows 2003 server both running DNS and DHCP.
Everything has been working fine until recently. I've set DHCP to hand out the 2008 server DNS first followed by the 2003.
The DNS server is set to Active Directory-Intergrated and Replication is to All DNS servers in this domain. Dynamic updates are set to Secure only. Aging are both set to 7 days.
SOA looks good. Name servers contains all the correct servers.
Zone transfers is set to Only to servers listed on the Name Servers Tab.
The DHCP server is set to Enable DNS dynamic updates with Dynamically update DNS A and PTR records only if requested. Discard A and PTR records when lease is deleted.
For some reason if the DHCP server hands out a new address the DNS is not updating. This issue hit almost all our teachers at once. Our students connect to the teacher computer and now they have to connect by IP address. DHCP IP's and DNS IP's are different. We have had the same setup for about two months. What changed?