Is multiple PTR records an issue?

Posted on 2008-11-07
Last Modified: 2012-05-05
I'm looking at my Server 2003 reverse lookup zone and notice multiple PTR records with the same Name (address) but different data (computer name).

This an issue?
Question by:classnet
    LVL 16

    Expert Comment

    Hi classnet,

    No, the "extra" PTR records that does not point to a valid computer name will be deleted, usually after your the amount of days that your DHCP lease is set to, IF you have configured scavaging of stale records.

    LVL 13

    Expert Comment

    It could be an issue if you have an application that expects a reverse lookup to match a forward lookup. Also, ping, tracert and a few other network diagnostic tools such as network and web log analysers sometimes can use reverse lookups to report data, multiple lookups could confuse apps and people alike.

    So, potentially not an issue but not a flat out 'no' outright.

    There are many discussions about this all over the web. Search for "multiple PTR records" for more info.

    Author Comment

    How do you eliminate this from happening?  I thought it was all automaticaly managed.
    LVL 16

    Accepted Solution

    Firstly - Make sure scavaging is enabled on your DNS.

    Secondly - Do not rename PC's very often.

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