this post was submitted on 04 Apr 2025

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Debugging (lemmy.dbzer0.com)

submitted 2 days ago by Sir_Kevin@lemmy.dbzer0.com to c/programmer_humor@programming.dev

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[–] elvith@feddit.org 1 points 22 hours ago

The DNS provider needs to provide an API, but not an ACME server.

Your server contacts Lets Encrypt and wants a certificate - say for homeserver.example.com. It tells Let's Encrypt to use DNS based authentication. Let's encrypt answers with a challenge code, that you now publish as a txt record with a defined name via your providers API for this (sub)domain. Let's encrypt then checks the TXT record and if it finds the challenge there, it sends you the certificate.