In news:0bcc01c39e2b$49f39b70$(E-Mail Removed),
Joe <(E-Mail Removed)> posted a question
Then Kevin replied below:
> I have a problem with my Reveres Lookup Zone, In the zone
> I have 2 ptr records for the same workstation. One is the
> old ptr ip address and the other with the new updated ip
> address. How can I setup the Reverse Lookup Zone to
> delete the old ip's in DNS when the workstations get new
> ip's from the dhcp server?
>
> Thanks in advance
>
> Joe

Because PTR records are IP based and not machine name based the record will
stay even though the machine has changed its IP address. The PTR record will
be deleted when it becomes stale or will be updated when another host
registers the PTR record with its name.
You have to understand the Reverse lookup zones have no relation whatsoever
to the Forward Lookup Zone accept by coincedence. The record is IP based and
until it is not updated for the time set for to be scavenged it will stay.
PTR records are pretty much irrelavent except to SMTP servers.

--
Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
Hope This Helps
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In news:(E-Mail Removed),
Kevin D. Goodknecht <(E-Mail Removed)> posted their thoughts, then I
offered mine
> In news:0bcc01c39e2b$49f39b70$(E-Mail Removed),
> Joe <(E-Mail Removed)> posted a question
> Then Kevin replied below:
>> I have a problem with my Reveres Lookup Zone, In the zone
>> I have 2 ptr records for the same workstation. One is the
>> old ptr ip address and the other with the new updated ip
>> address. How can I setup the Reverse Lookup Zone to
>> delete the old ip's in DNS when the workstations get new
>> ip's from the dhcp server?
>>
>> Thanks in advance
>>
>> Joe
>
> Because PTR records are IP based and not machine name based the
> record will stay even though the machine has changed its IP address.
> The PTR record will be deleted when it becomes stale or will be
> updated when another host registers the PTR record with its name.
> You have to understand the Reverse lookup zones have no relation
> whatsoever to the Forward Lookup Zone accept by coincedence. The
> record is IP based and until it is not updated for the time set for
> to be scavenged it will stay. PTR records are pretty much irrelavent
> except to SMTP servers.
>
> --
> Best regards,
> Kevin D4 Dad 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.
> ==========================================

Also Scavenging will clean it up.

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS IS" with no warranties.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
--
=================================

If you are using DHCP to regsiter the client's addresses in DNS, reference this article for info on removing these records. 306780 DHCP Does Not Delete
DDNS PTR Record for Expired Leases
http://support.microsoft.com/?id=306780

Thank you,
Mike Johnston
Microsoft Network Support

--

This posting is provided "AS IS" with no warranties, and confers no rights. Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

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