mms-engine.conf

<!DOCTYPE busconfig PUBLIC
  "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
  "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<!-- This file goes to /etc/dbus-1/system.d */
<busconfig>
  <policy user="nemo">
    <allow own="com.jolla.mms.handler"/>
  </policy>

  <policy user="root">
    <allow own="com.jolla.mms.handler"/>
    <allow send_destination="com.jolla.mms.handler"
           send_interface="com.jolla.mms.handler"/>
  </policy>

  <!-- allow radio user (ofono) signaling -->
  <policy user="radio">
    <allow send_destination="com.jolla.mms.handler"/>
  </policy>
</busconfig>