@Peek said in Let's Encrypt & ACME:
_acme-challenge.pfsense.domain.com
What about asking for a wildcard cert for root "domain.com" ?
Using
domain.com
and
*.domain.com
(twice) as "Domainname".
You can use pfsense.domain.com, another.domain.com and something-else.domain.com, they will all 'work'.
edit : btw :
_acme-challenge.pfsense.domain.com
is a sub domain do shouldn't exist already. It's just a 'random' place holder, so the acme check server can test for a TXT filed in "_acme-challenge.pfsense.domain.com" - which should contain the "VTTcvhklvFWaDrbJc" phrase. This proves that you control the domain "domain.com", thus the certificate can be handed over to you.