We are currently using Spark at my job for internal chat only and it runs on an internal Jabber chat server.
The issue we are having is some people though they are signed in are not showing up as online. I have checked all of their settings and all seems good to go. We have tried removing them and readding them to the contact list and they still show as offline. We have deleted their account from the chat server and had them recreate as well and this does not fix the issue either.
Any ideas of what we might be missing?