? ? ?
http://www.jabber.org/
Any possibility that the client your testing with has not been upgraded to support TLS?
Hmm....
Maybe our client needs to be updated also, I never checked what protocols it handles for secure transport.
or possibly your seeing the effect of this (very old) news:
http://blog.nextplane.net/2014/05/20...n-environments
tl;dr:
Google abandoned xmpp and neither IBM nor MS ever did "get it right".
- - - -
Maybe I should join the pack and disable all of my xmpp servers also.