OF-725 Also for offline case.

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@13975 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/openfire/OfflineMessageStrategy.java

@@ -96,6 +96,10 @@ public class OfflineMessageStrategy extends BasicModule {
             PrivacyList list =
                     PrivacyListManager.getInstance().getDefaultPrivacyList(recipientJID.getNode());
             if (list != null && list.shouldBlockPacket(message)) {
+                Message result = message.createCopy();
+                result.setTo(message.getFrom());
+                result.setError(PacketError.Condition.service_unavailable);
+                XMPPServer.getInstance().getRoutingTable().routePacket(message.getFrom(), result, true);
                 return;
             }