Applicable to:
- Plesk for Linux
- Plesk for Windows
Symptom
- Webmail is secured with an SSL certificate using the following KB article:
How to secure webmail using Let's Encrypt in Plesk Onyx -
Accessing webmail page in a browser throws security warning:
CONFIG_TEXT: The certificate is only valid for the following names: www.example.com, example.com
Error code: SSL_ERROR_BAD_CERT_DOMAIN
Cause
The certificate was not issued to CN (Common Name) webmail.example.com.
Resolution
Install a new SSL certificate (Domains > example.com > SSL/TLS Certificates) which will be valid for webmail.example.com CN as well.
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