I have Spark setup over a wan and at one site (call it site A) when their interenet drops for a bit then comes back on spark auto logs them back on ok. They can see everybody but people at sites where internet didnt drop cant see them.
Site A can still message other sites even though they dont show up on the other sites online lists. If the other sites log out then back in they can then see site A again. is there anyway of fixing this problem without having the other sites log out and back in?