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: downiesoft.linkpc.net
I ran this command: certbot certonly -d downiesoft.linkpc.net
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
How would you like to authenticate with the ACME CA?
1: Apache Web Server plugin (apache)
2: Runs an HTTP server locally which serves the necessary validation files under
the /.well-known/acme-challenge/ request path. Suitable if there is no HTTP
server already running. HTTP challenge only (wildcards not supported).
3: Saves the necessary validation files to a .well-known/acme-challenge/
directory within the nominated webroot path. A seperate HTTP server must be
running and serving files from the webroot path. HTTP challenge only (wildcards
not supported). (webroot)
Select the appropriate number [1-3] then [enter] (press 'c' to cancel): 1
Requesting a certificate for downiesoft.linkpc.net
Certbot failed to authenticate some domains (authenticator: apache). The Certificate Authority reported these problems:
Detail: DNS problem: query timed out looking up CAA for linkpc.net
Hint: The Certificate Authority failed to verify the temporary Apache configuration changes made by Certbot. Ensure that the listed domains point to this Apache server and that it is accessible from the internet.
Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.
[N.B. Similar results are generated using the command certbot renew
Also this is the first time I have been unable to renew certificates in several years]
My web server is (include version): apache2 2.4.29-1ubuntu4.27
The operating system my web server runs on is (include version):
My hosting provider, if applicable, is: N/A
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
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you're using Certbot): certbot 2.7.4