presenceManager.canProbePresence() should be called with username, not with JID.

src/java/org/jivesoftware/openfire/handler/PresenceSubscribeHandler.java

@@ -210,7 +210,7 @@ public class PresenceSubscribeHandler extends BasicModule implements ChannelHand
                         // Send the presence of the local user to the remote user. The remote user
                         // subscribed to the presence of the local user and the local user accepted
                         JID prober = localServer.isLocal(recipientJID) ? recipientJID.asBareJID() : recipientJID;
-                        if (presenceManager.canProbePresence(prober, senderJID.toString())){
+                        if (presenceManager.canProbePresence(prober, senderJID.getNode())){
                             presenceManager.probePresence(prober, senderJID);
                             PresenceEventDispatcher.subscribedToPresence(recipientJID, senderJID);
                         }