The answer may be too obvious as I can find no one with the same question, so apologies if I am just being thick. My current setup has two servers one of which runs DNSOnly and my DNS entries point to that servers IP address for DNS. It's domain is ns.domain.com The hosting server running WHM used to be my only DNS server and DNS services continue to run on it, updating the DNSOnly server. It had ns1.domain.com and ns2.domain.com. All three of those domains now point to the IP address of the DNSOnly server. (i.e. ns, ns1, ns2) Problems with the DNSOnly server make it wise for me to take it out of service at least until I can resolve its issues. Can I simply change the IP addresses of ns1 and ns2 back to my WHM server IP and revert to the original single-server infrastructure?