Error by creating a new certificate via plesk No valid IP addresses found for

My domain is:

I ran this command: Lets Encrypt Plugin for Plesk (it worked for several other Domains)

It produced this output:
Invalid response from
Type: urn:acme:error:unknownHost
Status: 400
Detail: No valid IP addresses found for

My web server is (include version):
apache2 / Plesk Onyx 17.5.3

The operating system my web server runs on is (include version):
Ubuntu 14.04.5 LTS‬

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):
Plesk Onyx 17.5.3


I’m trying to create a certificate for the above mention domain, but I get an error. To do this I use a plugin for plesk.
I had no problems with creating certificates for other domains on this server.

I would be happy if someone could help me.

kind regards

Johannes D.

The domain does not have an address record:

$ dig
; IN A

You have to fix your DNS settings first.

1 Like


the problem is solved. The was only set an CNAME in DNS, als I could access the Site via browser I tought everthing is ok with dns.
Thank you for your advice.

kind regards

Johannes D.

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