Packet Filter Rules - Chatroom

Hello,

I have some problem with the Packet Filter Rules. If i reject or drop Message,MUC Private Message or any from Group A to Group B and Group B to Group A they still can start and talk in a Private Chat, if they go in a chatroom and doubleklick on a person in the userlist of the chatroom.

I Use Openfire 3.7.1 and Spark 2.6.3

Sorry for my english.

regards

Sebastian