- Plesk Onyx 17.5 for Linux
Unable to install Let's Encrypt certificate. The following error can be found in
Error: Error de instalación del certificado SSL Let's Encrypt: Challenge marked as invalid. Details: No valid IP addresses found for example.com
An alias domain is selected to be certified but alias domain does not have an A record.
1. Remove alias for example.com domain under Let's Encrypt > Selected domain aliases.
2. Update DNS records for alias domain in order to point to Plesk server and then run again certification process.