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Reverse Lookup Zone Missing

 
 
Daveinfla
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      01-18-2008
Have a new customer with a server running SBS 2003 Standard R2. Whoever set
it up originally did something to screw up the reverse lookup zone in DNS.

The standard listing in the Reverse Zone which looks like the following was
missing:

0.in-addr.arpa Standard Primary
127.in-addr.arpa Standard Primary
1.168.192.in-addr.arpa Active Directory-Integrated Primary
255.in-addr.arpa Standard Primary

Actually the only thing listed was the wrong subnet, they had 192.168.16
listed instead of 192.168.1 and the remaining entries were missing.

I created a reverse lookup zone for 192.168.1 but it appears as:

192.168.1.x Subnet Active Directory-Integrated Primary

Not quite the same as above and it's missing the other 3 zones.

How do I re-create the reverse lookup zone properly?

Thanks,

Dave
 
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Daveinfla
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      01-20-2008

The information was pulled from the same DNS Management Console you used.

the 192.168.16.1 may have been a fat finger from someone else, which is why
I recreated it.

I took a look at several SBS 2003 servers I have out there and they all seem
to be slightly different.

The first one was as described in my original post.

Another has 192.168.1.x Subnet with the SOA and NS but has NO PTR records
defined. What's with that?

Next is the same as above but has the PTR records defined listing the full
IP address of each workstation.

The last one I looked at has the same but also has a second subnet defined
as 192.168.x.x with NO PTR's in it. Another fat finger?

The most common seems to be what you described, but what would cause the
PTR's not to populate?

And were did the server I describe in my first post get all the arpa
entries? What's also interesting about it's reverse lookup subnet is the fact
that it only lists the last octet of the IP address vs. the full IP address.
I don't get it?

Dave


"Cris Hanna [SBS-MVP]" wrote:

> David
> Not sure where you are getting your information from
> I'm looking at my SBS server- DNSmgmt Console
>
> In the left pane I have the Reverse Look up Zone
> I expand that and see 192.168.16.X Subnet
> If I click on that and look in the Right Pane
> I have an SOA Record, A Name Server Record (NS) and PTR records for my server and workstations
>
> Was the Internal IP at some point changed from 192.168.16.X to 192.168.1.X ?
>
> --
> Cris Hanna [SBS - MVP]
> -----------------------------------------------------------
> MVPs Do Not Work for Microsoft
> Please do not contact me directly regarding issues
> "Daveinfla" <> wrote in message news:B67F3729-DC23-46B2-ADC1-...
> Have a new customer with a server running SBS 2003 Standard R2. Whoever set
> it up originally did something to screw up the reverse lookup zone in DNS.
>
> The standard listing in the Reverse Zone which looks like the following was
> missing:
>
> 0.in-addr.arpa Standard Primary
> 127.in-addr.arpa Standard Primary
> 1.168.192.in-addr.arpa Active Directory-Integrated Primary
> 255.in-addr.arpa Standard Primary
>
> Actually the only thing listed was the wrong subnet, they had 192.168.16
> listed instead of 192.168.1 and the remaining entries were missing.
>
> I created a reverse lookup zone for 192.168.1 but it appears as:
>
> 192.168.1.x Subnet Active Directory-Integrated Primary
>
> Not quite the same as above and it's missing the other 3 zones.
>
> How do I re-create the reverse lookup zone properly?
>
> Thanks,
>
> Dave

 
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Shawn Shao [MSFT]
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Posts: n/a

 
      01-22-2008

Hi Dave,

Thanks for posting here.

From your post, I understand that when creating a Reverse Lookup Zone, the
following records were missing and no PTR record was created. If I am off
base, please do let me know.

0.in-addr.arpa Standard Primary
127.in-addr.arpa Standard Primary
1.168.192.in-addr.arpa Active Directory-Integrated Primary
255.in-addr.arpa Standard Primary


Regarding the above records, we can try the following steps to show or hide
them:
==============
1. Open DNS Management console.
2. Highlight your server name, click View menu, select Advanced.
3. Check the Reverse Lookup Zone again.


As I know, when you create the forward and reverse lookup zones, the DNS
service automatically creates an "A" record for the DNS server. However, it
does not create a PTR record, or reverse lookup record for the DNS server
(SBS server). So you may need to add PTR records for your server and other
computers manually.

If you would like to update the PTR records automatically, please check the
following configurations:
================

I. Enable Dynamic Update on the DNS zone
-----------------------------
1. Right click the DNS zone you created and choose Properties.
2. Under General tab, select "Secure only" for Dynamic updates.
3. Click OK.

II. DHCP configurations (if you have DHCP enabled on SBS server)
-----------------------------
1. Open DHCP Management console
2. Right click your DHCP server or the scope and choose Properties. Click
the DNS tab.
3. Select "Enable DNS dynamic updates according to the settings below" and
then select "Always dynamically update DNS A and PRT records"
4. Click OK.


For more information about create new DNS Zone and configure DNS dynamic
updates , please refer to the following article:

HOW TO: Create a New Zone on a DNS Server in Windows Server 2003
http://support.microsoft.com/?id=323445

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

I hope the info above helps. If you have anything unclear, please do let me
know.

Best regards,

Shawn Shao
Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

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