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You can use sub-domains as well: _acme-challenge.example.com -> _acme-challenge.DNSAUTH.example.com, _acme-challenge.foo.example.com -> _acme-challenge.foo.dnsa
by throw0101a 5y ago
You can use sub-domains as well: _acme-challenge.example.com -> _acme-challenge.DNSAUTH.example.com, _acme-challenge.foo.example.com -> _acme-challenge.foo.dnsauth.example.com.
You can then have a small VM handle answering DNS queries just for dnsauth.example.com. Folks have written servers to do just this:
* https://github.com/joohoi/acme-dns https://github.com/joohoi/acme-dns