Hi there…
we are using multiple openfire servers located in different countries which are connected via server to server connection.
When, for example, a user registrated on server a is using a chatroom on server b and for one reason the connection is cut (e.g. internet connection goes down, cable gets unplugged) the user will remain in the chatroom as a ghost. After reconnection and rejoining the room, the user is twice logged in and gets every message twice.