HCI -> ERP Connection via Reverse Proxy: SSL Handshake Exception

Hello,

we are trying to esablish a connection from our HCI tenant to a local ERP system via a reverse proxy. The HCI IP-range is white.listed on the reverse proxy.

Additionally the full certificate chain of the reverse proxy is imported into the deployed system.jks.keystore.

When doing a connection test within Eclipse (context menu of tenant) to the local ERP system we are getting the following error:

"Error during processing request on Operations server.

Reason

[GENERIC][GENERIC][EXCEPTION]:javax.net.ssl.HandshakeException: Remote host closed connection during handshake"

The server certificate itself is a wildcard certificate. Are these accepted by HCI? Do you have any other idea what could cause this issue?

Thank you for your Support.