This is a new build. Just spun up an ubuntu server, installed and went through the config for Openfire.
I chose Oneteam as my client and installed it on two windows 7 workstations. Both can connect using the users i created on the admin control panel. I can see both are connected, but when i add the contact, the status shows the other user offline, and when i try send a message it doesn't arrive on the other test user.
The simple firewall on ubuntu is inactive, and neither windows machine has the firewall enabled.
I've tried using native, http binding, https binding, Old style SSL encryption (not required on server) - every combination i could come up with, mirrored between test machines and disconnected/reconnected after each change and nothing.
Couldn't find anything on the boards/google about this, i'm hoping i missed an easy step somewhere.
Oh and, i named my server Messager before a google search told me i was an idiot and named my server after a relaxing body rub. So laugh at my expense.
Cheers all