By the way, the operating system (Ubuntu) is able to create a trusted SSL connection:
openssl s_client -connect myfritzbox.domain:.443
→ Verify return code: 0 (ok)
I also added my CA to /var/lib/openhab2/etc/keystore. I’m not sure, if this is the correct place for storing it. But due to my limited knowledge in Java, I don’t have any idea where else to put this CA.
Similar issue here:
