Please start Spark with activated “start debugger on startup”. The debugger will show the communication from Spark to the server an the received packages. Review the received packages for any line containing “privacy” and report the line, if available or confirm that the feature privacy is not announced to the client.
When i starting spark using the same address of de openfire then de debug messages appear, but when i start spark using my cname address doesn’t appear messages of privacy.
This is indicating an issue/missing feature for Openfire, if cnames are used. A relief for the Spark developers and a job for the Openfire dev team. I am afraid, that there will be no fix in the near future on Openfire for this.