You add domain in WebsitePanel, update domain dns but domain is not active after 24 hours.
Possible reason is you forget to enable dns service.
Instruction to fix error:
+ Login WebsitePanel, go to hosting plan and tick DNS checkbox in hosting plan resource.
+ Go to Hosting space -> Domains
+ Select your-domain.com which will bring up management page with dns option.
+ Then Enable dns for your-domain.com
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Thanks.