Comment on page
DOMAIN_ELSEWHERE()is a helper macro that lets you easily indicate that a domain's zones are managed elsewhere. That is, it permits you easily delegate a domain to a hard-coded list of DNS servers.
DOMAIN_ELSEWHEREis useful when you control a domain's registrar but not the DNS servers. For example, suppose you own a domain but the DNS servers are run by someone else, perhaps a SaaS product you've subscribed to or a DNS server that is run by your brother-in-law who doesn't trust you with the API keys that would let you maintain the domain using DNSControl. You need an easy way to point (delegate) the domain at a specific list of DNS servers.
For example these two statements are equivalent:
DOMAIN_ELSEWHERE("example.com", REG_MY_PROVIDER, ["ns1.foo.com", "ns2.foo.com"]);
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),