Could not issue an SSL/TLS certificate in Plesk

Have created a new site in Plesk on a temp domain but cannot get the SSL to issue, keep getting the following error, although we already have one site that has a valid certificate on this IP

Could not issue an SSL/TLS certificate for

Could not issue a Let's Encrypt SSL/TLS certificate for . Authorization for the domain failed.


Invalid response from


Type: urn:ietf:params:acme:error:dns

Status: 400

Detail: No valid IP addresses found for

That hostname resolves to the IP address which cannot be used for the http-01 or tls-alpn-01 challenges. If you're using a private IP address, you can only use the dns-01 challenge to validate the hostname.

"How would I do that in Plesk", you might ask? No idea..


Thanks for the response, it was the conclusion I came to in regard to Plesk, no idea on how you do it


I do not know Plesk either but maybe try the Plesk forums?

Some starter ideas


Have done, none of them work

1 Like

Why are you using IP
[even if you get a cert, no one (on the Internet) will be able to reach that IP]

Do you plan on serving any Internet clients?

What is the purpose of the cert?


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