Managing Active Directory does not always have to be complicated. If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why
Course Of The Month
3 days, 16 hours left to enrollBecome a Premium Member and unlock a new, free course in leading technologies each month.
Solved
DNS problem with external host for website
Posted on 2016-09-27
I took over a business network where the previous IT guy named the local network domain (sample.com) with the same name as the website domain name (sample.com) for the business, which caused internal DNS problems. We could not get to the external website. I was able to solve it in my Win2003 server environment by adding an A record with the name "www" to the internal DNS server that pointed to the external IP of the web hosting company.
Recently, we migrated to a new DNS server (Win2008 R2) and have not been able to see our own website internally since the migration. I have tried deleting/purging the A record and recreating the A record. We are using forwarders that point to opendns DNS servers. When I type in my internet browser www.sample.com, I keep getting the IIS homepage screen for the internal server.
I have recently reviewed articles referencing EDNS and DNS issues but not 100% this is my problem. Article here> http://weblogs.asp.net/owscott/windows-server-2008-r2-dns-issues
Does anyone have any ideas on how to resolve this issue in Win2008R2 DNS environment?
Thank you!
Recently, we migrated to a new DNS server (Win2008 R2) and have not been able to see our own website internally since the migration. I have tried deleting/purging the A record and recreating the A record. We are using forwarders that point to opendns DNS servers. When I type in my internet browser www.sample.com, I keep getting the IIS homepage screen for the internal server.
I have recently reviewed articles referencing EDNS and DNS issues but not 100% this is my problem. Article here> http://weblogs.asp.net/owscott/windows-server-2008-r2-dns-issues
Does anyone have any ideas on how to resolve this issue in Win2008R2 DNS environment?
Thank you!
[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
3-
2
5 Comments
Active today
I keep getting the IIS homepage screen for the internal serverWhat internal server?
This should not be anything to do with EDNS0, as the behavior you're describing is different. Sounds more like a redirect is in place.
What do you see when you try browsing just using the IP address instead of the host name?
What internal server? The internal DNS server also has IIS running on it to support an application. If I type in http://www.sample.com; yes browser redirects to http://sample.com rather than hitting the external IP. In nslookup, the internal DNS server is reporting the external IP of the web hosting company properly when I ask from my PC. Hence the confusion.....
If I type just the external IP of the host web server, I get the landing page for the web hosting product. Keep in mind they are hosting multiple domain names on this server. I understand what you are saying about the browser redirect and I thought the same, I have tried multiple browsers thinking it may be the browser doing the redirect from the http://www.sample.com to chopping it off and changing it to http://sample.com.
If I type just the external IP of the host web server, I get the landing page for the web hosting product. Keep in mind they are hosting multiple domain names on this server. I understand what you are saying about the browser redirect and I thought the same, I have tried multiple browsers thinking it may be the browser doing the redirect from the http://www.sample.com to chopping it off and changing it to http://sample.com.
Active today
In that case, it appears your web host is redirecting www.sample.com to sample.com, and thus on your internal DNS even though the www record gets you to the site correctly, it then redirects to sample.com, which on your internal DNS is the AD domain name, and thus resolves to the IP of a domain controller (there will be one A record for sample.com for each DC which points at a DC's IP).
The only fixes here are to set up your site so that it doesn't do the redirect, or move to a different AD domain name.
The only fixes here are to set up your site so that it doesn't do the redirect, or move to a different AD domain name.
Footech
Thanks for your help. How do I setup my internal domain so it doesnt do the redirect? I have queried this issue and found some DNS services can offer it as a part of their paid service. Is there a way to do it in Windows Server OS-DNS services?
Bill
Thanks for your help. How do I setup my internal domain so it doesnt do the redirect? I have queried this issue and found some DNS services can offer it as a part of their paid service. Is there a way to do it in Windows Server OS-DNS services?
Bill
Active today
You can't. It's configured on the web site. This is not a DNS thing. On the web site there is a HTTP redirect so that when your browser does a request for "www.sample.com" it receives the HTTP redirect which tells it to query for "sample.com".
Featured Post
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
Occasionally you run into the website or two that will not resolve properly using your own DNS servers. Some people simply set up global forwarders for their DNS server. I don’t recommend doing this because it can cause problems resolving addresse…
Background Information
Recently I have fixed file server permission issues for one of my client. The client has 1800 users and one Windows Server 2008 R2 domain joined file server with 12 TB of data, 250+ shared folders and the folder structure i…
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders.
Click on Start and then select Computer to view the available drives on the se…
This Micro Tutorial hows how you can integrate Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease.
The following video show how to bind OSX Mavericks to …
Suggested Courses
Course of the Month3 days, 16 hours left to enroll
Earn Certification
MCSA Configuring Windows 7 Exam 70-680
$49.00$44.10
691 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.