CheckDNS.NET is verifying if NS are alive
Error fetching SOA from ns4.shareyourimages.org [66.90.75.106]: Connection reset. Probably DNS server is offline.
Error fetching SOA from ns3.shareyourimages.org [66.90.75.105]: Connection reset. Probably DNS server is offline.
0 server(s) are alive
No DNS servers alive, tests stopped
In WHM check your SOA record and make sure the name server is ns3.yourdomain.com Then check and see that you have the right ip address in the rest of the fields. After that go to your domain registrar and make sure your name servers are registered properly.

Here is a screenshot of how I have mine setup for the US hosting that I added yesterday.





How do I register my own name servers?
To create your own name servers for a domain registered by Dynadot, follow these steps:
  1. Log into your Dynadot account.
  2. Click on the "Domains" tab.
  3. Click on the "Name Servers" subsection link.
  4. Look for the phrase, "Register a domain name server". It should be inside a blue box. Click on this link.
  5. Enter the host name (ns1.mydomain.com, for example) in the text box labeled "Host Name".
  6. Enter the IP address for the name server in the text box labeled "IP Address".
  7. Click the "Submit" button.