Comment by throw0101a

3 years ago

> […] the public name record just has to exist.

Specifically a TXT record for _acme-challenge has to exist for the requested hostname. Or a CNAME of the requested hostname pointing somewhere else that you control:

* https://dan.langille.org/2019/02/01/acme-domain-alias-mode/

* https://github.com/acmesh-official/acme.sh/wiki/DNS-alias-mo...

* https://www.eff.org/deeplinks/2018/02/technical-deep-dive-se...

No A (or AAAA) records needed.

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