gajim-antispam 1.4.21-2 (amd64 binary) in ubuntu disco

 With this plugin, Gajim users can block:
  * Incoming PubSub messages
  * Incoming Messages from Contacts not in your Roster
  * You can set a question that has to be answered from contacts
    not in your roster, before they can pass the spam filter
 Note, that the plugin might interact badly with some IRC gateways.