Solved

ISP Change and DNS resolution

Posted on 2014-02-21
4
210 Views
Last Modified: 2014-02-26
Hi

We are changing our ISP and I am trying to remember how Active Directory integrated DNS (which is what we are using) gets or resolves its external forward and reverse DNS information?  IE, where does the server look to, to pull this information?  an external DNS server provided by our ISP?  This was all pre-configured years ago and before my time.

We are using windows server 2003 and I went into dnsmgmt ->properties-> forwarders tab and under DNS domain to use "all other DNS domains" as apposed to configured IP addresses.

What I am worried about, is that I am not looking in the right area, and that when we change ISPs, our external DNS resolution will cease.  Am I looking in the right area and does the setting use "all other DNS domains" force our DNS server to transparently look to any external DNS servers to pull down outside DNS information, or is the setting I am after somewhere else and need to be manually configured with our new ISPs DNS servers?

thanks
0
Comment
Question by:CnicNV
  • 3
4 Comments
 
LVL 4

Assisted Solution

by:Jeffery Hayes
Jeffery Hayes earned 250 total points
ID: 39877194
This should help.

http://technet.microsoft.com/en-us/library/cc779380(v=ws.10).aspx

Along with are there any DNS Records like Type A or MX for Mail Servers?

If so you would want to update these as well on your servers if applicable.

Hope this helps you out.
0
 

Author Comment

by:CnicNV
ID: 39877408
I am just wondering for the purposes of our internal host computers being able to continue external DNS resolution with the ISP change if anything needs to be done at all with regards to the setting use "all other DNS domains" in the forwarder tab?  There are no other IP listed in there, IE no ISP DNS server IPs or anything at all other than "all other DNS domains".   is that by it's self sufficient?

Thanks again
0
 

Accepted Solution

by:
CnicNV earned 0 total points
ID: 39878059
0
 

Author Closing Comment

by:CnicNV
ID: 39888297
I discovered that I dont need to use forwarders, that the default root hint servers listed are what our dns servers are pulling everything down on.  According to the link i post above, using forwarders can speed up dns resolution but introduce single points of failure if they go down.  For example using your ISPs DNS servers.

One user even recommends only pointing to forwarders that you have control over.
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

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

Ever notice how you can't use a new drive in Windows without having Windows assigning a Disk Signature?  Ever have a signature collision problem (especially with Virtual Machines?)  This article is intended to help you understand what's going on and…
Trying to figure out group policy inheritance and which settings apply where can be a chore.  Here's a very simple summary I've written which might help.  Keep in mind, this is just a high-level conceptual overview where I try to avoid getting bogge…
Windows 8 came with a dramatically different user interface known as Metro. Notably missing from that interface was a Start button and Start Menu. Microsoft responded to negative user feedback of the Metro interface, bringing back the Start button a…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

839 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