Reverse look up zone - purge old entries

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hello, I noticed today that I have many old pointer records in my reverse
look up zone. Mainly its from computers being renamed. So one particular IP
may have 2 or 3 pointers assigned to it, all are different names. I have
dynamic updates on and the aging/scavenging turned on as well. I would like
old pointers to be deleted when not used anymore, but it doesnt seem to be
working. I see old machine names from months ago in that zone. How can I
ensure that my reverse look up zone is current and only shows pointers for
computers currently on the network? I appreciate any help on this. Thank
you. Phil
 
Phil said:
Hello, I noticed today that I have many old pointer records in my
reverse look up zone. Mainly its from computers being renamed. So
one particular IP may have 2 or 3 pointers assigned to it, all are
different names. I have dynamic updates on and the aging/scavenging
turned on as well. I would like old pointers to be deleted when not
used anymore, but it doesn't seem to be working. I see old machine
names from months ago in that zone. How can I ensure that my reverse
look up zone is current and only shows pointers for computers
currently on the network? I appreciate any help on this. Thank you.
Phil
Click to expand...

Enable scavenging on the zone, or make your DHCP server the owner of all DNS
records.
It's not the renaming of machines, it is machines disconnecting from the
network leaving the PTR behind. This left behind PTR cannot be updated or
deleted by any other machine except the one that owns it. So when another
machine comes along and gets the IP, it can only create its own PTR because
it has no permissions on the old record.

DHCP can be configured to register all records and remove them when the
lease expires, but even it cannot remove records it does not own.
 
Enable scavenging on the zone, or make your DHCP server the owner of all DNS
records.
Click to expand...

How can I make my DHCP server the owner of DNS records? It's enough to
enable "dynamic updates"?
 
In
RimSA said:
How can I make my DHCP server the owner of DNS records? It's enough to
enable "dynamic updates"?
Click to expand...

Choose your weapon... (operating system):

How to configure DNS dynamic updates in Windows Server 2003:
http://support.microsoft.com/kb/816592/

317590 - HOW TO Configure DNS Dynamic Update in Windows 2000:
http://support.microsoft.com/?id=317590

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Ace

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Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Windows Server Directory Services
Microsoft Certified Trainer
Infinite Diversities in Infinite Combinations.
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