2 sites not available after IP change

I just had to change the IP address on a VPS server and updated the IP in the DNS records and in Virtualmin, all virtual sites except 2 are now working fine but 2 of them can’t connect see http://acupuncturemooroolbark.com for and example. How do I troubleshoot this?

Turned out to be a DNS problem I re-did the update and it started working.