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Failure in Basic Connectivity in DCdiag /Test:DNS /e /v result

Hi ALL, when I run DCdiag /Test:DNS /e /v result, i find the following result:

                  DNS TEST: f…....net                  
DOMAIN CONTROLLERS      Authentication(Auth)      Basic Connectivity(BASC)      Forwarders(Forw)      Delegation(Del)      Dynamic registration enabled (Dyn)      Resource Record registration(RReg)
ORD-SVR-DC      PASS       FAIL      n/a      n/a      n/a      n/a
TH-SVR-DC      PASS       FAIL      n/a      n/a      n/a      n/a
CAN-SVR-DC      PASS       FAIL      n/a      n/a      n/a      n/a
FPO-SVR-DC      PASS       PASS      PASS      PASS      PASS      n/a
PPR-SVR-DC      PASS       FAIL      n/a      n/a      n/a      n/a
ORD-SVR-DC1      PASS       FAIL      n/a      n/a      n/a      n/a

please tell what step do I need to take further
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1 Solution
have you created AD integrated Reverse lookup zone for all subnets in which all Domain Controllers residing?
I think they are missing ?
Just check if you have them, if not please create them, run "Ipconfig /registerdns" on all domain controllers, allow some time for replication and then run DNS test again and let me know please.
bubaibhattaAuthor Commented:
Hi Mahesh,

Thanks for the information. I shall come back to you with all the status .
SandeshdubeySenior Server EngineerCommented:
Also ensure correct dns setting on DC as this.
Best practices for DNS client settings on DC and domain members.
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bubaibhattaAuthor Commented:
Thanks Mahesh and Sandesh,

when I checked the command output, i see a section like this:
TEST: Basic (Basc)
Error: No WMI connectivity
[Error details:0x80070005 <Type: HRESULT - Facility: Win32, Description: Access is denied.>- Connection to WMI server failed]

this is coming everytime , when I run this command from PDC and it is checking to all other ADCs.

Is it something that I need to be worried?
SandeshdubeySenior Server EngineerCommented:
It seems to be WMI issue check this http://social.technet.microsoft.com/Forums/windowsserver/en-US/4f33837b-1cb1-4648-85b1-3ba87cbfe93e/wmi-remote-access-denied?forum=winserverManagement

Checked that wmi is not corrupted.Run wmic pagefile output in cmd.
bubaibhattaAuthor Commented:
Thanks Sandesh,

meanwhile this is the side-by-side comparison of AD sites and DNS Reverselookup zones.
Do they look alright?
bubaibhattaAuthor Commented:
Hi Sandesh/Mahesh,

i checked the link that you suggested for WMI and find everything is alright.

What next?

By the way, not sure if this is relevant, all these DCs are in windows 2003 platform.
Can you pl check on all domain controllers advanced TCP/IP properties \ DNS tab for below.
ensure that "Append Primary and connection specific dns suffixes" radio button is selected
Ensure that "Append parent suffixes of primary dns suffix" checkbox is selected
Ensure that "register this connection addresses in Dns" checkbox is selected
If there is any deviation in the above settings, its probably you will face name resolution and connectivity issues
Also check for any false \ wrong forwarder entry exists on all dns servers forwarder tab..
Also check if you are able to replicate AD through AD sites and services without any issue please
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