Symptoms
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The Forwarding hosting type is set for the domain in Plesk > Domains > example.com > Hosting & DNS tab > Hosting Settings.
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When trying to issue a Let's Encrypt certificate in Domains > example.com > SSL/TLS Certificates, an error that is similar to the following is shown:
CONFIG_TEXT:Could not issue a Let's Encrypt SSL/TLS certificate for example.com.
The authorization token is not available at http://example.com/.well-known/acme-challenge/vjcxCwV74PbWUvnMTT2o5MeWP8z0rg054SP_IfIYfXg.
To resolve the issue, make sure that the token file can be downloaded via the above URL.
Details
Invalid response from https://acme-v02.api.letsencrypt.org/acme/authz-v3/76408809540.
Details:
Type: urn:ietf:params:acme:error:unauthorized
Status: 403
Detail: Invalid response from https://example.com/.well-known/acme-challenge/vjcxCwV74PbWUvnMTT2o5MeWP8z0rg054SP_IfIYfXg
Cause
This behavior is tied to the following known product issue:
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#EXTSSLIT-1871 "If nginx is disabled, it is no longer possible to start securing a domain with the “Forwarding” hosting type (because this scenario is not supported and is bound to fail)."
Fixed in:- SSL It! 1.9.10 10 February 2022
Resolution
Since the bug has been resolved permanently already, you should update the SSL It! extension to its latest version by using the steps in this article:
How to manage Plesk extensions (install, disable, remove, update)
If an update to the SSL It! extension is not possible for some reason, you may execute the following workaround:
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