Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is:
I ran this command:
sudo certbot --nginx -d m3.gestennis.com
It produced this output:
Certbot failed to authenticate some domains (authenticator: nginx). The Certificate Authority reported these problems:
Detail: DNS problem: query timed out looking up A for m3.gestennis.com
My web server is (include version):
The operating system my web server runs on is (include version):
Ubuntu 20.04 LTS
My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don't know):
I'm using a control panel to manage my site (no, or provide the name and version of the control panel):
I'm using SSH.
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you're using Certbot):
If I execute this command on my PC (not on my server, which is in a remote server farm):
I get the HTML code of my page.
If I use
I receive the correct DNS A record.
Thank you for help!