How to set "Update associated pointer (PTR) record" attribute for

Discussion in 'DNS Server' started by Serge, Sep 29, 2005.

  1. Serge

    Serge Guest

    Hi,

    I am running a Windows 2003 Active Directory with AD integrated DNS. I have
    noticed that I have numerous reverse lookup records with the same host name
    but different IPs. I looked at my forward lookup records and I noticed that
    none of my records have "Update associated pointer (PTR) record" checked off.

    Is there a way to do it globally or do I have to do it for each record ? I
    would like a way to get it so when there is a change to a forward lookup
    record (DHCP, manually done, etc. etc.) the corresponding reverse lookup
    record is fixed as well.

    Thank you for any assistance you can give me ...

    Serge
     
    Serge, Sep 29, 2005
    #1
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  2. This is common in reverse lookup zones, it is a record ownership issue. A
    PTR record created by one machine can only be updated by that machine. If
    the machine leaves the record behind when it is disconnected from the
    network another machine cannot update the PTR record, so it creates a new
    record using its name. You can set the reverse zone to regularly scavenge
    stale records.



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    Kevin D. Goodknecht Sr. [MVP], Sep 30, 2005
    #2
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  3. Serge

    Serge Guest

    How do I set that ? Where do I set that ? Is there a Q article that could
    walk me through that ?
     
    Serge, Oct 4, 2005
    #3
  4. This is common in the reverse lookup zone for PTRs because a PTR registered
    by one machine cannot be updated or deleted by another machine. The best way
    to resolve this is to enable scavenging of stale resource records on the
    zone.
    Right click on the server using the DNS management console, choose
    properties, on the Advanced tab check the box "Enable automatic scavenging
    of stale records" Then with the console in "Advanced" view, right click on
    the zone, select properties, click the 'aging" button on the general tab,
    check the box "scavenge stale resource records" In "The zone cane be
    scavenged after:" field it should have a date by default that is seven days
    from the last scavenge date or seven days from when scavenging was enabled.
    Occasionally I have seen dates like 1/7/1601 if that is the date, uncheck
    the box, click OK then OK again, then go back into the properties of the
    zone, click the aging button and re-enable scavenging again, then click OK
    and OK again. the next time it should have the right date.

    --
    Best regards,
    Kevin D. Goodknecht Sr. [MVP]
    Hope This Helps
    ===================================
    When responding to posts, please "Reply to Group"
    via your newsreader so that others may learn and
    benefit from your issue, to respond directly to
    me remove the nospam. from my email address.
    ===================================
    http://www.lonestaramerica.com/
    ===================================
    Use Outlook Express?... Get OE_Quotefix:
    It will strip signature out and more
    http://home.in.tum.de/~jain/software/oe-quotefix/
    ===================================
    Keep a back up of your OE settings and folders
    with OEBackup:
    http://www.oehelp.com/OEBackup/Default.aspx
    ===================================
     
    Kevin D. Goodknecht Sr. [MVP], Oct 5, 2005
    #4
  5. Serge

    Serge Guest

    Ok, so now that I have that turned on, my forward lookup zone, and reverse
    lookup zones say that the zone can be scavenged after 10/12/2005. So that
    means that all the duplicate reverse lookup records that have old dates
    should be scavenged correct ? (Like I have two records for the same machine
    with dates of 8/4/04 and 9/8/04 - both records should be deleted correct ?)
     
    Serge, Oct 5, 2005
    #5
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