?
Solved

Windows DNS Server Not Returning Correct Resolve

Posted on 2014-10-02
9
Medium Priority
?
255 Views
Last Modified: 2014-10-08
I have a public DNS server our company uses for itself and a few customers.  I have not had any issues with the server till today.  Here is what we have

NS01
Windows Server 2008 R2
Primary DNS Server

NS02
Windows Server 2008 R2
Secondary DNS Server

History of issue:
3 days ago we changed an “A” Record for support.mydomain.com as we had a web server change.  This server also has a ticket system on it that receives emails so we have a “MX” record that points to the same as the A record.
In the DNS Manager all records look correct.
The Secondary DNS Server has synced with the primary and has all the same records.

But we are still getting emails to the old server. We thought it was simply a propagation issue but come to find out our NS01 is returning the old record even though it has been updated.  When we go to mxtoolbox and check NS01 gives us the old record but NS02 gives us the correct one.  This is extremely odd as how could NS02 have the right one sense it gets it from NS01?  We have tried the following

Clear Cash
Update Server Data Files
Scavenge Stale Resource Records.
All from the GUI in DNS Manager.

We have followed all of the Technet check lists and troubleshooting guides and we are not getting anything to work.  Please help.
0
Comment
Question by:Iggy79
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 3
9 Comments
 
LVL 16

Expert Comment

by:choward16980
ID: 40357441
Have you checked your reverse records?  Make sure you don't have an incorrect PTR record in there for your subnet.

Found this hotfix.  Shot in the darK?
http://support2.microsoft.com/kb/2508835
0
 
LVL 2

Author Comment

by:Iggy79
ID: 40357452
I do have a PTR for support.mydomain.com and it points to the correct IP address.

This also does not explain why I am getting correct resolves from NS02 but not from NS01.  I have also checked the Windows Event log and I cannot find anything that looks like it is a red flag.
0
 
LVL 16

Expert Comment

by:choward16980
ID: 40358057
On NS01, are forwarders set up?  Is there a public name server listed above your domain server?
0
Create the perfect environment for any meeting

You might have a modern environment with all sorts of high-tech equipment, but what makes it worthwhile is how you seamlessly bring together the presentation with audio, video and lighting. The ATEN Control System provides integrated control and system automation.

 
LVL 2

Author Comment

by:Iggy79
ID: 40358087
NS01 Config
I have attached a screen shot of NS01
0
 
LVL 16

Expert Comment

by:choward16980
ID: 40358127
Right click NS01, click properties and then check the fowarders tab.  Please paste that screenshot.
0
 
LVL 2

Author Comment

by:Iggy79
ID: 40358144
Here is the screen shoot.NS01 Forwarders
0
 
LVL 12

Expert Comment

by:jkaios
ID: 40358446
try to ping the IP Address and see if that correctly resolves it to the correct name, using the -a switch:

ping -a 108.163.194.124

if it doesn't resolve correctly, then there is possibly a problem (sometimes duplicate) with your Reverse DNS Lookup records.
0
 
LVL 2

Accepted Solution

by:
Iggy79 earned 0 total points
ID: 40360749
This issue was resolved but removing all the static IP settings on the NIC and reapplying them.  not sure why this solved the issue as I put in all the same values that it had previous.
0
 
LVL 2

Author Closing Comment

by:Iggy79
ID: 40367926
I solved it myself.
0

Featured Post

Four New Appliances. Same Industry-leading Speeds.

But don't take it from us.  The Firebox M370 is Miercom tested and Miercom approved, outperforming its competitors for stateless and stateful traffic throughput scenarios.  Learn more about the M370, M470, M570 and M670 and find the right solution for your organization today!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

You might have come across a situation when you have Exchange 2013 server in two different sites (Production and DR). After adding the Database copy in ECP console it displays Database copy status unknown for the DR exchange server. Issue is strange…
An article on effective troubleshooting
This tutorial will show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. The…
This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles to another domain controller. Log onto the new domain controller with a user account t…
Suggested Courses

801 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question