FAQ: Frequently Asked Questions

Usual problems reported by users are documented here:

SSLHandshakeException

javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.

This happens often if Let's Encrypt certificates are used and the intermediate certificate is not installed correctly. You might need to reference fullchain.pem instead of plain cert.pem or give chain.pem as additional certificate file.

You can check the server setup with one of the SSL-checkers, e.g. SSL Shopper or Qualis SSL Server Test.