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Reverse PTR records disappear or not created

    Question

  • I have DNS running on a Windows 2003 machine.  It is the primary controller and holder of all roles.

    For some reason, the reverse PTR records of new forward lookup entries are not created.  That is ok and not terribly important.

    However, the reverse PTR for the Windows 2003 domain controller itself disappears from time to time.  I have to manually recreate it again.

    The machine is not multihomed.  It points to itself and another machine internally for Primary and Secondary DNS.  

    Thursday, July 11, 2013 9:54 PM

All replies

  • Few questions to start

    a) what is the ZONE type ? - > AD integrated / Primary

    b) please paste ipconfig/all from your DC and other excerpt from client

    c) DOes your DNS rely on Forwarders / roothints for internet resolution ?

    d) Is DHCP registering on behalf of clients ?

    e) paste the output from ADSIEdit - specifically for CN = MicrosoftDNS , check for any duplicate zones

       

    Friday, July 12, 2013 2:08 AM
    Moderator
  • AD Integrated Primary zone

    From the DC:

    Windows IP Configuration

       Host Name . . . . . . . . . . . . : wilson
       Primary Dns Suffix  . . . . . . . : hq.idxct.com
       Node Type . . . . . . . . . . . . : Unknown
       IP Routing Enabled. . . . . . . . : No
       WINS Proxy Enabled. . . . . . . . : No
       DNS Suffix Search List. . . . . . : hq.idxct.com
                                           idxct.com
                                           dev.idxct.com
                                           stage.idxct.com
                                           dr.idxct.com
                                           se.idxct.com

    Ethernet adapter Local Area Connection 3:

       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : VMware Accelerated AMD PCNet Adapter
       Physical Address. . . . . . . . . : 00-0C-29-E5-75-98
       DHCP Enabled. . . . . . . . . . . : No
       IP Address. . . . . . . . . . . . : 10.19.28.246
       Subnet Mask . . . . . . . . . . . : 255.255.0.0
       Default Gateway . . . . . . . . . : 10.19.28.10
       DNS Servers . . . . . . . . . . . : 10.19.28.246
                                           10.19.28.248

    From a client PC:

    Windows IP Configuration

       Host Name . . . . . . . . . . . . : wvs4am
       Primary Dns Suffix  . . . . . . . : hq.idxct.com
       Node Type . . . . . . . . . . . . : Hybrid
       IP Routing Enabled. . . . . . . . : No
       WINS Proxy Enabled. . . . . . . . : No
       DNS Suffix Search List. . . . . . : hq.idxct.com
                                           idxct.com
                                           hq2.idxct.com
                                           se.idxct.com
                                           stage.idxct.com
                                           dr.idxct.com
                                           dev.idxct.com

    Ethernet adapter Local Area Connection:

       Connection-specific DNS Suffix  . : hq.idxct.com dev.idxct.com idxct.com se.idxct.com dr.idxct.com stage.idxct.com
       Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
       Physical Address. . . . . . . . . : 78-2B-CB-7E-15-F4
       DHCP Enabled. . . . . . . . . . . : Yes
       Autoconfiguration Enabled . . . . : Yes
       IPv4 Address. . . . . . . . . . . : 10.19.19.12(Preferred)
       Subnet Mask . . . . . . . . . . . : 255.255.0.0
       Lease Obtained. . . . . . . . . . : Monday, June 24, 2013 3:14:16 PM
       Lease Expires . . . . . . . . . . : Thursday, July 18, 2013 3:14:30 PM
       Default Gateway . . . . . . . . . : 10.19.28.10
       DHCP Server . . . . . . . . . . . : 10.19.28.246
       DNS Servers . . . . . . . . . . . : 10.19.10.177
                                           10.19.28.246
                                           10.20.33.15
       NetBIOS over Tcpip. . . . . . . . : Enabled

    Tunnel adapter isatap.hq.idxct.com dev.idxct.com idxct.com se.idxct.com dr.idxct.com stage.idxct.com:

       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . : hq.idxct.com dev.idxct.com idxct.com se.idxct.com dr.idxct.com stage.idxct.com
       Description . . . . . . . . . . . : Microsoft ISATAP Adapter
       Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes

    Yes I do see that some Forwarder IP addresses and a lot of Root Hints are showing.  I have no idea if they were added automatically or manually.  DHCP is registering on behalf of clients.  How do should I paste the ADSIEdit output?  I didn't see any duplicate zones in there though.


    Friday, July 12, 2013 4:04 PM
  • Hi Banc0,


    I notice that you point your clients to 10.19.10.177 as the primary DNS server and 10.20.33.15 as an alternate DNS server. Would you please let us know what they are.

    In addition, you can run dcdiag /test:dns in your DC to check if there is any error.

    Hope this helps.


    Best Regards
    Jeremy Wu


    Monday, July 15, 2013 7:08 AM
    Moderator
  • Those are Linux based DNS servers.  The DC is the second DNS server.  It doesn't matter if the primary DNS was the DC itself, this happens irregardless.

    ----------------------------- 

    Here is the output of the dcdiag test:

    C:\Documents and Settings\Banc0>dcdiag /test:dns

    Domain Controller Diagnosis

    Performing initial setup:
       Done gathering initial info.

    Doing initial required tests

       Testing server: IDXCT2\WILSON
          Starting test: Connectivity
             ......................... WILSON passed test Connectivity

    Doing primary tests

       Testing server: IDXCT2\WILSON

    DNS Tests are running and not hung. Please wait a few minutes...

       Running partition tests on : ForestDnsZones

       Running partition tests on : DomainDnsZones

       Running partition tests on : Schema

       Running partition tests on : Configuration

       Running partition tests on : hq

       Running enterprise tests on : hq.idxct.com
          Starting test: DNS
             Test results for domain controllers:

                DC: wilson.hq.idxct.com
                Domain: hq.idxct.com


                   TEST: Basic (Basc)
                      Warning: adapter [00000007] VMware Accelerated AMD PCNet Adapt
    er has invalid DNS server: 10.19.28.248 (<name unavailable>)

             Summary of test results for DNS servers used by the above domain contro
    llers:

                DNS server: 10.19.28.248 (<name unavailable>)
                   1 test failure on this DNS server
                   This is not a valid DNS server. PTR record query for the 1.0.0.12
    7.in-addr.arpa. failed on the DNS server 10.19.28.248
                   Name resolution is not functional. _ldap._tcp.hq.idxct.com. failed on the DNS server 10.19.28.248

             Summary of DNS test results:

                                                Auth Basc Forw Del  Dyn  RReg Ext
                   ________________________________________________________________
                Domain: hq.idxct.com
                   wilson                       PASS WARN PASS PASS PASS PASS n/a

             ......................... hq.idxct.com passed test DNS

     
    Monday, July 15, 2013 1:14 PM