Certbot error when using Pi-Hole als DNS-server

[JuergenAuer]

Hi @hajo62

@hajo62

This works very well, if I don't enter Pi-Hole as DNS server on my Fritzbox.
But if I enter pi-hole as DNS server there, I get this error message:

that says: It's not a Certbot problem (so your Certbot command isn't relevant), it's a problem of your pi-hole DNS server. That DNS server doesn't work.

Why? No idea.

@hajo62

When I reconfigure my Fritzbox to be the local DNS-Server and reboot my Pi (not sure how to manually change the DNS server setting and flush caches), the certbot does NOT throw an error.

There is the confirmation. Your FritzBox DNS server works, your Pi-Hole DNS server not.