Cannot access new website

Computer Gladiator 441 Reputation points
2020-08-05T17:28:38.573+00:00

Hello, we have a new website created and hosted by a third party. Users cannot access the website from the office network. It can be accessed anywhere else outside the office network. Users can also surf the net as usual other than this new website. Nothing on our DNS servers have been changed before the new site went live. When we went live, the previous website would only appear not the new. We cleared out history and cache as well as cleared out cache of the firewall. Flushed DNS and registered DNS. We have a 2008 primary DC with DNS and a secondary 2012 R2 DC server replicating DNS. There was an A record pointing to the website domain with the IP of the previous IP hosting provider. I change this IP to the new provider IP and now when accessing the new site the following appears. "This site cannot be reached.... server IP address could not be found. Try running Windows Network Diagnostics. DNS_PROBE_FINISHED_NXDOMAIN.
THE LAST THING I TRIED WAS ADDING 8.8.8.8 ON THE SECONDARY DC ADAPTER AND MOVING IT UP AS THE PRIMARY DNS. I WAS THEN ABLE TO ACCESS THE NEW WEBSITE.

OBVIOUSLY A DNS ISSUE, BUT CANNOT SEE WHAT IT COULD BE? DOES THE NEW THIRD PARTY PROVIDER NEED TO POINT BACK TO OUR IP?

THANK YOU

Windows Server 2012
Windows Server 2012
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
1,528 questions
Windows DHCP
Windows DHCP
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.DHCP: Dynamic Host Configuration Protocol (DHCP). A communications protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization's network.
1,021 questions

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  1. Dave Patrick 426.1K Reputation points MVP
    2020-08-05T17:42:16.83+00:00

    Sounds a little vague but it may be a split brain setup is in order here.
    https://learn.microsoft.com/en-us/windows-server/networking/dns/deploy/split-brain-dns-deployment

    --please don't forget to Accept as answer if the reply is helpful--

  2. Sunny Qi 10,896 Reputation points Microsoft Vendor
    2020-08-06T10:23:18.34+00:00

    Hi,

    Thanks for posting here.

    Before we go further, may I confirm with you if the new website name is same as the internal domain name?

    Best Regards,
    Sunny

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  3. Sunny Qi 10,896 Reputation points Microsoft Vendor
    2020-08-10T09:51:47.557+00:00

    Hi,

    Just want to confirm with you if the new website name is same as the internal domain name?

    If yes, you could try the suggestion that DSPatrick provided.

    And I would like suggest you to try the simplest way to see if the issue can be resolved.

    The simplest way is change the website name to www.example.com, and then create a A record in DNS zone named www.example.com pointed on corresponded IP address.

    Then please instruct your users to use http://www.domain.com to access the website.

    Here is an article related to the website name is same as domain name .
    https://blogs.msmvps.com/acefekay/2009/09/03/split-zone-or-no-split-zone-can-t-access-internal-website-with-external-name/

    Hope my answer will help you.

    ---Please Accept as answer if the reply is helpful---

    Best Regards,
    Sunny

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