DNS plays a crucial role in ensuring smooth operations in Active Directory. However, buried in DNS, a hidden issue often lurks – the presence of obsolete NS records linked to decommissioned DCs. While smaller clients may find this issue manageable with a quick check, larger enterprises can face a significant challenge, consuming valuable time and resources to manage DNS. In this blog, we’ll talk about how to streamline DNS cleanup and efficiently remove obsolete NS records – ensuring your Active Directory continues to run fast and smoothly.

The Issue – Efficiently Removing Hundreds Of Old NS Records

Recently, while doing a routine DNS check, I discovered a large number of NS records in the DNS system that were remnants of old DCs. The scale of the issue was significant – one domain had around 200 of these records, while another had 115 out of only eight examined domains. I knew with the round-robin impact of DNS, that this had to slow authentication and DC-related queries by hosts within the network. Despite having performed cleanup operations in the past, this discovery proved overwhelming, to say the least.

And then, I asked myself an important question: How do you approach this DNS cleanup and efficiently remove hundreds of NS records without risking the accidental removal of valid name servers or missing critical entries?

The Solution – A Script That Does The Heavy Lifting

Imagine a computer trying to connect to DNS. If it encounters outdated servers, delays in resolving requests can impact user experience and productivity. This cleanup effort is especially crucial for larger domains with a history of many DCs, where accumulated obsolete records pose an even greater risk of delays.

So, what’s the solution to streamline this type of DNS cleanup? I created a script to identify and safely remove NS records from nonexistent DCs while ensuring integrity and minimizing risks.

However, I strongly recommend running the script in read-only mode initially, followed by a trial run with the “-WhatIf” parameter. This gives you a chance to do a thorough evaluation of potential changes before implementation. To add an extra layer of safety, the script should also be designed to prompt before removing each record.

How Does It Work?

So, how does the script work? It finds decommissioned DCs that have NS records in every DNS zone. The script first saves DNS information to document previous changes and for change control purposes before making any modifications. Additionally, it generates a change log afterward, providing transparency and accountability in DNS management.

Interested in putting this to use? Click the button below to contact us today!

Why DNS Cleanup Is Important

Performing a DNS cleanup is crucial for the overall health of your IT infrastructure, and there are many benefits that come along with it.

Not only will it improve performance when accessing DCs and with authentication, but it also ensures efficient navigation. This mitigates delays and enhances user experience – making your IT and employees happier.

Improves DNS Lookup Performance

Mitigates Delays

Ensures Efficient Navigation

Enhances User Experience

It’s easy to understand why organizations overlook the (tedious) task of cleaning up decommissioned servers from Active Directory, especially when it comes to DNS. But taking care of this task doesn’t just save time and resources – it’s like giving your network a turbo boost in efficiency. By getting rid of those old NS records before they become a problem, you’re setting yourself up for smoother sailing and dodging potential performance bottlenecks.

Contact us today to get started! We’ll not only provide the script that can do the heavy lifting, but we’ll also provide the knowledge behind it so you’re able to do it on your own in the future. On top of that, we’ll check the overall health of your Active Directory and provide recommendations that will help you ensure its operational efficiency. Don’t wait – reach out to us today!

Interested in learning more about streamlining DNS cleanup in Active Directory and removing obsolete NS records? Contact us by calling (502) 240-0404 or emailing info@mirazon.com