disappearing PTR records in DNS for linux servers

We loose several reverse entries every month. This has been happening for months, maybe a year.
The servers are all static IPs. This is only happening on linux boxes.
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JohnAsked:
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Kerem ERSOYConnect With a Mentor PresidentCommented:
Hi,

AD DNS is an AD integrated entry. Since your hosts are all having static IP's the only way to add them is to add manually including PTR records. If you're loosing some of the PTR entries it might indicate that you have several DNS servers replicating to each other and deleting the existing PTR records. This is the only thing I could think of. So you'd better check your forest and see what DNS servers are replicating to your DNS server and what authority do they have.

Cheers,
K.
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