Certbot failed to authenticate some domains

My domain is: gusteau.zume.com

I ran this command: certbot -v certonly --standalone

It produced this output:
Saving debug log to C:\Certbot\log\letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Please enter the domain name(s) you would like on your certificate (comma and/or
space separated) (Enter 'c' to cancel): gusteau.zume.com
Requesting a certificate for gusteau.zume.com
Performing the following challenges:
http-01 challenge for gusteau.zume.com
Waiting for verification...
Challenge failed for domain gusteau.zume.com
http-01 challenge for gusteau.zume.com

Certbot failed to authenticate some domains (authenticator: standalone). The Certificate Authority reported these problems:
Domain: gusteau.zume.com
Type: dns
Detail: No valid IP addresses found for gusteau.zume.com

Hint: The Certificate Authority failed to download the challenge files from the temporary standalone webserver started by Certbot on port 80. Ensure that the listed domains point to this machine and that it can accept inbound connections from the internet.

Cleaning up challenges
Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile C:\Certbot\log\letsencrypt.log or re-run Certbot with -v for more details.

My web server is (include version): --> IIS v10.0.17763.1

The operating system my web server runs on is (include version): Windows Server 2019

My hosting provider, if applicable, is: --> Self

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): IIS

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): certbot 1.19.0

1 Like

Hi @mraja, welcome to the LE community forum :slight_smile:

You will need a working HTTP site before you can secure it (via HTTP authentication).

Your FQDN resolves to an unrouteable (RFC 1918) IP:

Name:    gusteau.zume.com
Address: 10.35.201.96
1 Like

Thanks @rg305

1 Like

Glad to have helped :slight_smile:
Cheers from Miami :beers:

#FreeCUBA :cuba: