I have all windows server 2008 r2 sp1 ent servers for my domain controllers, 2 in two different sites and 2 in my main site. Forest and domain functional levels are both "windows server 2008 r2". In DNS I have Forward lookup Zones scavenging set to 7 days the default and in my Reverse lookup zones i have scavenging set to 3 or 7 days on a few subnets.
Here is my issue that DNS isn't scavenging stale records, I'm finding that when we decommission a computer its dns record stays and is never deleted.
What can I look at to ensure that stale records are removed after 7 days in DNS?
Thanks,