facing issue with PTR record

    דיון כללי

  • I have two sites , and and on CDC site have two server abc and xyz.

    both server are resolving fine Host to IP and IP to Host on CDC site which is in USA but from DC site which in india not able to resolve xyz server from IP but able to resolve Host to IP. even abc server is resolving fine like Host to IP and IP to Host.

    all settings are same for both server ...pls help

    • נערך על-ידי Amit kushwaha שבת 09 יוני 2012 07:17
    יום שישי 08 יוני 2012 20:16

כל התגובות

  • Hello, 

    Try to Log in into the server & run dcdiag/test:dns and check for errors if any.

    Also check for DNS related event IDs.

    Regards, Ravikumar P

    שבת 09 יוני 2012 09:32
  • Hi Amit,

    Thanks for posting here.

    > but from DC site which in india not able to resolve xyz server from IP but able to resolve Host to IP.

    It seems the reverse name resolution is not working properly on DC.COM site . Which DNS server is these hosts in using now ? Have we created a reverse zone for the IP segment of USA site and replicate the records form the DNS server of USA site to that DC.COM DNS server ?

    A simple testing we may try is switching to use the USA DNS server as the preferred DNS address on hosts of and see if can get the proper result,

    Reverse lookup


    Tiger Li

    Tiger Li

    TechNet Community Support

    יום שלישי 12 יוני 2012 07:57
  • Amit,

    Tiger gave you a good test solution swapping DNS IPs. Howeber, I'm confused a bit - maybe I missed something, but what is "CDC?" Is that what the Active Directory Site name is called for the child domain?


    How is DNS designed in your forest between and

    • Are the and zones in the ForestDnsZones partition (replicated forest wide)?
    • Or is dc.dom and in their own, resepective DomainDnsZones partitions (only replicated to DCs in their own domain), and you have a parent-child delegation created from to
    • How about the reverse zone(s)? Are your reverse zones set to forestwide (ForestDnsZones partition) or domain wide replication (DomainDNsZones partition)?

    Please review the following and provide some specifics on how DNS is designed for the forward lookup zones and the reverse lookup zones. This way we can evaluate the design and see what may be missing that is not supporting reverse lookups.

    DNS Design Options in a Multi-Domain Forest - How to create a Parent-Child DNS Delegation, and How to Configure DNS to create a new Tree in the Forest
    Published by Ace Fekay, MCT, MVP DS on Oct 1, 2010 at 12:22 PM


    My feeling is the reverse zones are only set to Domain wide replication, which is why the reverse zone is not available in both locations.


    Ace Fekay
    MVP, MCT, MCITP EA, MCTS Windows 2008/R2, Exchange 2007 & Exchange 2010, Exchange 2010 EA, MCSE & MCSA 2003/2000, MCSA Messaging 2003
    Microsoft Certified Trainer
    Microsoft MVP - Directory Services
    Complete List of Technical Blogs:

    This post is provided AS-IS with no warranties or guarantees and confers no rights.

    FaceBook Twitter LinkedIn

    יום רביעי 13 יוני 2012 02:26