TMK most of the server code is open source but part is not. Therefore the service is not classified as open source. Try navigating into the spam-filter @ a30a761 folder to see that it is unavailable.
I am not worried. I do run my own servers for various comms and know what information an admin can monitor and collect.
I am not worried. I do run my own servers for various comms and know what information an admin can monitor and collect.