Question

DNS error 7062

Asked by: bgcm12

Hello all,

PROBLEM:
I have an error log absolutly jam-packed with error code 7062's.

INFRASTRUCTURE:
I have a Windows 2003 Server Native domain with 1 domain controller and WinXP Pro clients.  Within the same building there is another seperate domain with 1 Windows 2003 server DC.  There is a 1-way trust between the domains.  My DNS tree has forward lookup zones for both domains.

SYMPTOMS:
The 7062 error contains this info:
-----------------------------------------------------------------------------------------------
Event Type:      Warning
Event Source:      DNS
Event Category:      None
Event ID:      7062
Date:            12/01/2007
Time:            14:27:52
User:            N/A
Computer:      PDC2
Description:
The DNS server encountered a packet addressed to itself on IP address 10.16.1.234. The packet is for the DNS name "_ldap._tcp.PARK-HIGH._sites.dc._msdcs.Park-High.local.". The packet will be discarded. This condition usually indicates a configuration error.
 
Check the following areas for possible self-send configuration errors:
  1) Forwarders list. (DNS servers should not forward to themselves).
  2) Master lists of secondary zones.
  3) Notify lists of primary zones.
  4) Delegations of subzones.  Must not contain NS record for this DNS server unless subzone is also on this server.
  5) Root hints.
 
Example of self-delegation:
  -> This DNS server dns1.example.microsoft.com is the primary for the zone example.microsoft.com.
  -> The example.microsoft.com zone contains a delegation of bar.example.microsoft.com to dns1.example.microsoft.com,
  (bar.example.microsoft.com NS dns1.example.microsoft.com)
  -> BUT the bar.example.microsoft.com zone is NOT on this server.
 
Note, you should make this delegation check (with nslookup or DNS manager) both on this DNS server and on the server(s) you delegated the subzone to. It is possible that the delegation was done correctly, but that the primary DNS for the subzone, has any incorrect NS record pointing back at this server. If this incorrect NS record is cached at this server, then the self-send could result.  If found, the subzone DNS server admin should remove the offending NS record.
 
You can use the DNS server debug logging facility to track down the cause of this problem.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 50 25 00 00               P%..    
---------------------------------------------------------------------------------------------------------------------------------------------------

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Asked On
2007-01-12 at 07:41:57ID22120581
Tags

dns

,

7062

,

error

Topic

Windows 2003 Server

Participating Experts
2
Points
500
Comments
10

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Answers

 

by: bgcm12Posted on 2007-01-12 at 07:42:57ID: 18302192

Dcdiag gives this info:

---------------------------------------------------------------------------------------------------------------------
Performing initial setup:
   Done gathering initial info.

Doing initial required tests

   Testing server: Park-High\PDC2
      Starting test: Connectivity
         The host 01eb85ee-1a2e-4c48-8962-7565355adc37._msdcs.Park-High.local co
uld not be resolved to an
         IP address.  Check the DNS server, DHCP, server name, etc
         Although the Guid DNS name
         (01eb85ee-1a2e-4c48-8962-7565355adc37._msdcs.Park-High.local) couldn't
         be resolved, the server name (pdc2.Park-High.local) resolved to the IP
         address (10.16.1.234) and was pingable.  Check that the IP address is
         registered correctly with the DNS server.
         ......................... PDC2 failed test Connectivity

Doing primary tests

   Testing server: Park-High\PDC2
      Skipping all tests, because server PDC2 is
      not responding to directory service requests

   Running partition tests on : TAPI3Directory
      Starting test: CrossRefValidation
         ......................... TAPI3Directory passed test CrossRefValidation

      Starting test: CheckSDRefDom
         ......................... TAPI3Directory passed test CheckSDRefDom

   Running partition tests on : ForestDnsZones
      Starting test: CrossRefValidation
         ......................... ForestDnsZones passed test CrossRefValidation

      Starting test: CheckSDRefDom
         ......................... ForestDnsZones passed test CheckSDRefDom

   Running partition tests on : DomainDnsZones
      Starting test: CrossRefValidation
         ......................... DomainDnsZones passed test CrossRefValidation

      Starting test: CheckSDRefDom
         ......................... DomainDnsZones passed test CheckSDRefDom

   Running partition tests on : Schema
      Starting test: CrossRefValidation
         ......................... Schema passed test CrossRefValidation
      Starting test: CheckSDRefDom
         ......................... Schema passed test CheckSDRefDom

   Running partition tests on : Configuration
      Starting test: CrossRefValidation
----------------------------------------------------------------------------------------------------------

 

by: bgcm12Posted on 2007-01-12 at 07:49:30ID: 18302258

In my DNS tree, the _MSDCS folder is delegated (greyed out).

Is this correct?  as my DNS server is my DC.

 

by: bgcm12Posted on 2007-01-12 at 07:52:35ID: 18302290

Thanks in advance for any advice....

 

by: Chris-DentPosted on 2007-01-12 at 11:26:20ID: 18304229


Hi,

If it's Delegated it should also have some NS Records underneath it ("(Same as Parent Folder)" Name Server <NameServerIP>). Where do those point to?

If it's your local server, do you have a Forward Lookup Zone called _msdcs.park-high.local (in addition to your Park-High.local zone)?

If not, add a new Forward Lookup Zone called _msdcs.park-high.local. Make it Active Directory Integrated and set it to Replicate to all DCs in the Domain (or Forest). Ensure that Dynamic Updates is set to Secure Only.

Once done run these commands on your DCs:

net stop Netlogon
net start Netlogon
ipconfig /registerdns

HTH

Chris

 

by: Chris-DentPosted on 2007-01-12 at 11:27:41ID: 18304244


Oh, there's an alternative as well.

If you don't want to maintain that as a seperate zone simply delete the greyed out _msdcs folder from your main Forward Lookup Zone, check Dynamic Updates is on then run the commands above and ensure it's appeared.

Chris

 

by: johanvz1Posted on 2007-01-12 at 11:36:38ID: 18304321

Hi,

Look at this:

http://support.microsoft.com/default.aspx?scid=kb;en-us;235689

And perhaps also restore your original root servers like this:

http://support.microsoft.com/default.aspx?scid=kb;en-us;229840

Regards,


Johan

 

by: bgcm12Posted on 2007-01-15 at 01:26:21ID: 18315156

>>If you don't want to maintain that as a seperate zone simply delete the greyed out _msdcs folder from your main Forward Lookup Zone, check Dynamic Updates is on then run the >>commands above and ensure it's appeared.

This seemed to work perfectly.  I will wait a few minutes for any errors to report and then get back to you.

Do you know why the _msdcs folder may have become delegated without any (apparent) administrator intervention?

Thanks...

 

by: Chris-DentPosted on 2007-01-15 at 01:29:39ID: 18315174


Afraid not. I believe it becomes delegated if you configure a child domain as it's normally set to replicate to everything in the forest (the normal zone stays with servers in it's current domain). Not sure on that bit though.

Chris

 

by: bgcm12Posted on 2007-01-15 at 01:44:48ID: 18315226

Fantastic. All is well.

Thank you.

 

by: Chris-DentPosted on 2007-01-15 at 02:00:04ID: 18315289


You're welcome.

Chris

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