I installed Nextcloud on a Raspberry Pi 3, got it running pretty well. I used openssl to generate a SSL certificate. It was after that step when letsencrypt came to my mind and I thought, maybe I can create a new SSL certificate through Letsencrypt (so that I do not get the popup that’s asking me whether or not I trust this website whenever I try to access my cloud through the browser) and encrypt traffic with the LE-SSL-certificate instead of the openssl-certificate.
I will just fill out the premade form as this will make it a lot easier for you to understand what my problem is, I guess:
Please fill out the fields below so we can help you better.
My domain is: xxxxxx.ddns.net
I ran this command: sudo ./letsencrypt-auto
It produced this output:
Failed authorization procedure. xxxxxx.ddns.net (tls-sni-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: Incorrect validation certificate for TLS-SNI-01 challenge. Requested ef558645254c70cbf4ffba1a2c85bd43.9c0b742983a5d29377ed994612517970.acme.invalid from 220.127.116.11:443. Received certificate containing ‘’
The following errors were reported by the server:
Detail: Incorrect validation certificate for TLS-SNI-01 challenge.
from 18.104.22.168:443. Received certificate containing ‘’
To fix these errors, please make sure that your domain name was
entered correctly and the DNS A record(s) for that domain
contain(s) the right IP address.
My operating system is (include version): Raspbian the latest
My web server is (include version): apache2
I can login to a root shell on my machine (yes or no, or I don’t know): yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no
If you have any further questions please feel free to post them below. I will try to help as best as I can, considering I just got started in the server business and therefore I am pretty noobish on the whole thing.