If either telnet or curl work on the port without errors, but the agent still fails with an “SSL certs missing” error, review the Enable SSL for the Java Agent documentation.
There are many SSL exception variants, of which many require expert-level debugging. If your error isn’t addressed in the above documentation, please initiate a ticket with AppDynamics customer support.
Step 4. JKK and SSL supported protocol or cipher limitations
JDK and SSL supported protocol/cipher limitations also require expert-level SSL debugging, so we recommend reaching out to AppDynamics support.