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DHCP Not Resolving Domain Name

Posted on 2014-04-28
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Last Modified: 2014-05-05
Ok, I am needing some help here. I have Two 2008 Dc's and We have one Server 2012 which is running DHCP service. The two 2008 dc's are running DNS server. For some reason the pc's are getting the correct dns and wins servers under ipconfig /all but if i try to ping the domain which is ping.intalh.org it resolves to an older dns server that is not in production. Our servers are resolving fine since they are static, wireless pc's are fine as well. Just wired pc that are dhcp. Any suggestions?
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Question by:PainKiller89
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by:WalkaboutTigger
ID: 40027867
What DNS servers are defined in the DHCP scope?
For the wired workstations which are not resolving correctly, when you perform an IPCONFIG /ALL, what is listed as the DHCP server?  Is it possible you have some hitherto-unknown or legacy DHCP server, such as a router or a switch, issuing DHCP addresses?
Look at all of the scope options on your 2012 DHCP server to ensure none of the other name server options are pointing to this legacy DNS server.
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Author Comment

by:PainKiller89
ID: 40027900
The DNS servers that are defined in the scope are local dc's which is 192.168.1.101 and .102. But for wired machines when i force flushdns it still shows a old domain controller 2.45 as the resolve name for the domain. BUt under ipconfig/all it does list proper dns servers which are .101 and .102. When in real it should ping.intalh.org resolve to 192.168.101 or .102. Weird thing is this is only happening on .2 and .3 subnet. .0 and .1 and .200 it resolves fine.
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Author Comment

by:PainKiller89
ID: 40027904
This is from my machine.

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : intalh.org
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 44-8A-5B-27-0F-81
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.2.155(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.252.0
   Lease Obtained. . . . . . . . . . : Monday, April 28, 2014 1:47:13 PM
   Lease Expires . . . . . . . . . . : Thursday, May 01, 2014 1:47:12 PM
   Default Gateway . . . . . . . . . : 192.168.2.250
   DHCP Server . . . . . . . . . . . : 192.168.1.69
   DNS Servers . . . . . . . . . . . : 192.168.1.101
                                       192.168.1.102
   Primary WINS Server . . . . . . . : 192.168.1.101
   Secondary WINS Server . . . . . . : 192.168.1.102
   NetBIOS over Tcpip. . . . . . . . : Enabled
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Author Comment

by:PainKiller89
ID: 40027907
Which above shows the current dns servers, but when ping.intalh.org it resolves to 192.168.2.45 which was our old domain controller which was demoted today and it was a 2003 box. I need to be able to resolve to 1.101 or 1.102.
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Expert Comment

by:WalkaboutTigger
ID: 40027942
Did you check DNS to ensure the domain entries point to the new servers?
Did you perform a DCDIAG on both new Active Directory Controllers to ensure DNS entries are properly configured?
Did you check the IPv4 settings on one of the machines exhibiting the issue to ensure a DNS or WINS server is not statically configured?
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Accepted Solution

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PainKiller89 earned 0 total points
ID: 40031997
I have gotten it resolved.
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Author Closing Comment

by:PainKiller89
ID: 40041633
Fixed it Myself
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