I tried to create some certificates and I couldn't with any domain, they are all on Cloudflare without active proxy.
My domain is: tt.t4l35.host, tt.t4l35.ml, error.t4l35.pp.ua, tt.t4l35.pp.ua
I ran this command: sudo certbot certonly --standalone --preferred-challenges http --agree-tos --email talesam@gmail.com -d error.t4l35.pp.ua (The command is the same, just change the domain at the end.)
It produced this output: (is the same output for all domains)
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for tt.t4l35.ml
Waiting for verification...
Challenge failed for domain tt.t4l35.ml
http-01 challenge for tt.t4l35.ml
Cleaning up challenges
Some challenges have failed.
IMPORTANT NOTES:
- The following errors were reported by the server:
Domain: tt.t4l35.ml
Type: dns
Detail: DNS problem: NXDOMAIN looking up A for tt.t4l35.ml - check
that a DNS record exists for this domain
ubuntu@v2ray:~$ sudo certbot certonly --standalone --preferred-challenges http --agree-tos --email talesam@gmail.com -d tt.t4l35.host
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for tt.t4l35.host
Waiting for verification...
Challenge failed for domain tt.t4l35.host
http-01 challenge for tt.t4l35.host
Cleaning up challenges
Some challenges have failed.
IMPORTANT NOTES:
- The following errors were reported by the server:
Domain: tt.t4l35.host
Type: dns
Detail: DNS problem: NXDOMAIN looking up A for tt.t4l35.host -
check that a DNS record exists for this domain
My web server is (include version):
The operating system my web server runs on is (include version): Ubuntu 20.04
My hosting provider, if applicable, is: Oracle
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):
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): certbot 0.40.0
