Can't complete /usr/bin/certbot certonly --dry-run -v -d

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. |, 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:
/usr/bin/certbot certonly --dry-run -v -d,

It produced this output:
18:03:16 ingber@linode# ~: /usr/bin/certbot certonly --dry-run -v -d,
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: Spin up a temporary webserver (standalone)
3: Place files in webroot directory (webroot)

Select the appropriate number [1-3] then [enter] (press 'c' to cancel): 1
Plugins selected: Authenticator apache, Installer apache
Simulating a certificate request for and
Performing the following challenges:
http-01 challenge for
http-01 challenge for
Waiting for verification...
Challenge failed for domain
Challenge failed for domain
http-01 challenge for
http-01 challenge for

Certbot failed to authenticate some domains (authenticator: apache). The Certificate Authority reported these problems:
Type: unauthorized
Detail: 2600:3c01::f03c:91ff:fe93:e6f3: Invalid response from 403

Type: unauthorized
Detail: 2600:3c01::f03c:91ff:fe93:e6f3: Invalid response from 403

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.

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

My web server is (include version):
apache2 2.4

The operating system my web server runs on is (include version):
Ubuntu 22.04.1 LTS (Jammy Jellyfish)

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):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):
certbot 1.29.0

1 Like

Have you made any changes since opening this topic?
The error shows 403 error via HTTP on IPv6.
I get a 302 redirection response via HTTP on IPv6:

curl -I6
HTTP/1.1 302 Found
Date: Wed, 24 Aug 2022 14:04:50 GMT
Server: Apache
Content-Type: text/html; charset=iso-8859-1

Also, please show the output of:
apachectl -t -D DUMP_VHOSTS


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