the XMPP-specs describe a way to send unavailable presence status messages to the subscribed users (1):
- Else, if the contact has no available resources, the server MUST
either (1) reply to the presence probe by sending to the user the
full XML of the last presence stanza of type “unavailable”
received by the server from the contact, or (2) not reply at all.
Is this function (1) supportet in Jive Messenger?