File: //etc/dbus-1/system.d/synoconfd.conf
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
<policy user="root">
<allow own="com.synology.synoconfd" />
<allow send_destination="com.synology.synoconfd" />
</policy>
<policy context="default">
<allow send_interface="com.synology.synoconfd.Example" />
<allow send_interface="com.synology.synoconfd.User" send_member="RefreshQuota" />
<allow send_interface="com.synology.synoconfd.User" send_member="CheckExpiredUser" />
</policy>
</busconfig>