DNS PTR Record not update

Discussion in 'DNS Server' started by Jonathan, Dec 18, 2007.

  1. Jonathan

    Jonathan Guest

    Hi all.

    I have a Windows 2000 Mixte network with some Windows 2000 and Windows XP

    My DNS is Active Directory Integrated and allow dynamic updates.

    My DHCP is configured to allow Dynamic Updates and the option "Dynamically
    update DNS A and PTR records only if requested by the DHCP clients" is
    enabled. The "Discard A and PTR records when lease is deleted" is also

    The problem that I have is that the PTR record is created but not updated.
    What I means ? I means that when I un-join a computer from the domain,
    changing is name and join it back to the domain, the PTR record of the old
    computer name is still in the DNS.

    I have over 150 computers on my network and it's the same problem when I
    install a new one. The first PTR record looks like mycomputername. and when I
    join the computer to the domain, a new PTR record is created like

    The scavanging option is enabled, my DNS zone and DHCP are configured

    It tooks me 1 hour yesterday to do a manual cleanup of my Reverse Lookup
    Zone in my Windows DNS server.

    Why the PTR record is created but is never updated ?

    Jonathan, Dec 18, 2007
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  2. Jonathan

    infinitiguy Guest

    I'm not sure if any of this will help, but I thought I had a similar issue in
    my win2k3 test environment. I was noticing that when I turned a machine on
    it would register itself fine, including PTR records, and if I turned it off,
    the A record would be removed but the PTR would stay for what seemed like
    forever. What I ultimately noticed was that the PTR record would remain
    until another machine grabbed that same IP address from my DHCP server in
    which case a new A record would be created and it would automatically update
    the PTR record to reflect back to the new hostname.
    infinitiguy, Jan 19, 2008
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