I have 2 Server 2008 R2 domain controllers with a AD integrated DNS zone for the domain. Previously, scavenging was not enabled. I enabled scavenging a week ago and now that I am seeing old stale records go away, I am also noticing that about 80% of my DNS record timestamps arent updating properly.
From what I understand, the servers should update their own DNS records every 24 hours, but like I said, I have many that are over 24 hours old. If I log on to the server and reboot, or run ipconfig /registerdns, it will update the timestamp just fine. The computer account has full control in the security settings of its respective record.
One domain controller is also a DHCP server. I tried configuring it to update DNS, which is working for workstations that have DHCP addresses, but I do not think tha these updates work for servers that have static IPs. Any idea why these timestamps arent updating?
modifyTimeStamp
orwhenChanged
attributes of thednsNode
objects getting updated (use ADSIEdit to check).