Applicable to:
- Plesk for Linux
- Plesk for Windows
Symptoms
Unable to secure webmail in Domains > example.com > SSL/TLS Certificates > Let's Encrypt if site example.com is hosted on another server:
PLESK_ERROR: An SSL / TLS certificate could not be issued for example.com.
Details An SSL / TLS Let's Encrypt certificate could not be requested for example.com.
Go to http://example.com/.well-known/acme-challenge/pt7YtTqj1HCGz2yLqRoRC-LN9SbtSp5v4cJpe0YXkY and check if the authorization token is available.
If it is, try requesting the certificate again. If not, there may be a problem with your DNS settings.
Your domain in Plesk is hosted at the following IP addresses: 203.0.113.2 although the DNS task used another IP: 203.0.114.3.
Check that the IP addresses listed in the domain's DNS zone match the IP addresses where the domain is hosted.
If this is of no use to you or you cannot detect what is wrong with your DNS settings, check out this article from our knowledge base
Cause
When SSL/TLS Support is enabled in Domains > example.com > Hosting Settings Let's Encrypt by default tries to issue one certificate that includes example.com and webmail.example.com names.
Since example.com is hosted on another server such certificate can not be issued.
Resolution
One of following solutions can be applied:
- Log in to Plesk.
- Go to Domains > example.com > Hosting Settings.
- Configure Hosting Type as No web hosting.
Note: it will remove all files from domain.
- Log in to Plesk.
- Go to Domains > example.com > Hosting Settings.
- Disable the option SSL/TLS Support.
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