--- a/plugins/mod_dialback.lua	Fri May 11 01:54:36 2012 +0100
+++ b/plugins/mod_dialback.lua	Fri May 11 02:04:29 2012 +0100
@@ -65,37 +65,30 @@
 		-- he wants to be identified through dialback
 		-- We need to check the key with the Authoritative server
 		local attr = stanza.attr;
-		local to, from = attr.to, attr.from;
-		
-		origin.hosts[from] = { dialback_key = stanza[1] };
+		local to, from = nameprep(attr.to), nameprep(attr.from);
 		
 		if not hosts[to] then
 			-- Not a host that we serve
 			origin.log("info", "%s tried to connect to %s, which we don't serve", from, to);
 			origin:close("host-unknown");
 			return true;
+		elseif not from then
+			origin:close("improper-addressing");
 		end
 		
+		origin.hosts[from] = { dialback_key = stanza[1] };
+		
 		dialback_requests[from.."/"..origin.streamid] = origin;
 		
 		-- COMPAT: ejabberd, gmail and perhaps others do not always set 'to' and 'from'
 		-- on streams. We fill in the session's to/from here instead.
 		if not origin.from_host then
-			origin.from_host = nameprep(attr.from);
-			if not origin.from_host then
-				origin.log("debug", "We need to know where to connect but remote server blindly refuses to tell us and to comply to specs, closing connection.");
-				origin:close("invalid-from");
-			end
+			origin.from_host = from;
 		end
 		if not origin.to_host then
 			origin.to_host = nameprep(attr.to);
 		end
 
-		if not origin.from_host or not origin.to_host then
-			origin.log("debug", "Improper addressing supplied, no to or from?");
-			origin:close("improper-addressing");
-		end
-		
 		origin.log("debug", "asking %s if key %s belongs to them", from, stanza[1]);
 		module:fire_event("route/remote", {
 			from_host = to, to_host = from;