We're running SBS 2008, migrated from SBS 2003, from Windows 2000. DHCP leases look fine, DNS Forward addresses look fine with no duplicates.
However Reverse DNS is a mess and getting messier. There are a bunch of static entries from old PCs from way back. I have scavenging turned on. However, whenever I check the box to "delete when stale", go out of DNS Manager and back in, the box is unchecked. Now I have multiple static duplicate IPs, and there is getting to be more and more each week.
What do I need to do to clean this up?