Error getting validation data


I setup my server with Webmin/Virtualmin. Since I Changed my dns setup. (my Server is the master DNS, Hetzner is the Slave DNS provider)
I can't get an new Certificate.
The domains are reachable.
But got an error.

Let's debug tells me the same.

My domain is:

I ran this command:

Certbot certonly -d

It produced this output:

Plugins selected: Authenticator standalone, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching Error getting validation data

 - The following errors were reported by the server:

   Type:   connection
   Detail: Fetching
   Error getting validation data

   To fix these errors, please make sure that your domain name was
   entered correctly and the DNS A/AAAA record(s) for that domain
   contain(s) the right IP address. Additionally, please check that
   your computer has a publicly routable IP address and that no
   firewalls are preventing the server from communicating with the
   client. If you're using the webroot plugin, you should also verify
   that you are serving files from the webroot path you provided.

My web server is (include version):

Server version: Apache/2.4.38 (Debian) Server built: 2020-08-25T20:08:29

The operating system my web server runs on is (include version):
Debian 10.7
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):

1 Like

Hi @Happyfeet01

looks like you have found a solution.

There is a check of your domain - - with a new Letsencrypt certificate:
expires in 90 days, - 2 entries

And both connections use it :+1:

Fix your other things - minimal a redirect http -> https is always a good idea (see the #url-checks part).

1 Like

Good Morning. i found a Solution. Port 80 was closed :see_no_evil: Forward to https is my prefered Settings.
Now i must wait 7 Days so recure my Email with LE. Too many requests :-/

Why do you need to wait? Why not use one of the 5 certificates that were issued previously?

You use valid Letsencrypt certificates. www redirects to non-www.

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