DNS Issues

Good Day,

We recently finished our migration from Server 2003 to 2012 R2. Luck has it that I finished the last file transfer on a Monday and the power supply went out on the old server on Tuesday morning.

Ever since the switch, we have had an issue with the computers having issues with connecting to websites. They will constantly get the message that the website is unavailable but if they refresh the page generally it will load right up.

All the computers have their DNS pointed to the new DNS/Domain Controller so I am assuming there is something that I need to change on the DNS server to resolve this issue.

Can you all assist me in fixing this issue?

Thank You
CrossedRubiconAsked:
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Zacharia KurianAdministrator- Data Center & NetworkCommented:
Have you configured forwarders in your AD DNS?

Zac
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JAN PAKULAICT Infranstructure ManagerCommented:
does your new box have same ip/name as old one?

are all your operation masters transferred successfully to the new installations?

https://support.microsoft.com/en-us/kb/234790

also check if you dont have rogue dhcp server in the system

http://myitforum.com/myitforumwp/2014/10/29/rogue-dhcp-server-detection-free-tool/
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CrossedRubiconAuthor Commented:
<<Facepalm>>

I can't believe I forgot the forwarders. They were still pointing to the old server. Once the old one went down I just put it into operation and forgot to change forwarders.

Once I fix that I didn't have any issues.

Thanks and sorry. I can't believe I missed that and didn't even think to check them.
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Windows Server 2012

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