courier (0.76.1-1) unstable; urgency=medium

  * The courier, courierfilter services has been split from the
    courier-mta init.d script, so if you still use sysvinit, then for
    a full restart/reload you also need to restart/reload these
    services:

        # service courier restart
        # service courierfilter restart
        # service courier-mta restart

    Systemd units have a dependency, so they should be restarted
    automatically on courier-mta restart.

 -- Ondřej Surý <ondrej@debian.org>  Mon, 09 May 2016 15:13:47 +0200