From c9069ce623b54b660b20c217b7f1a1562d756c1a Mon Sep 17 00:00:00 2001
From: mathieui <mathieui@mathieui.net>
Date: Wed, 2 Apr 2014 21:40:58 +0200
Subject: [PATCH] Fix #2377 (send back unavailable presence on message from
 unknown room)

---
 src/core.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/core.py b/src/core.py
index 1ae34d3d..ac0c1722 100644
--- a/src/core.py
+++ b/src/core.py
@@ -3197,6 +3197,7 @@ class Core(object):
         tab = self.get_tab_by_name(room_from, tabs.MucTab)
         if not tab:
             self.information(_("message received for a non-existing room: %s") % (room_from))
+            muc.leave_groupchat(self.xmpp, room_from, self.own_nick, msg='')
             return
 
         nick_from = message['mucnick']