mimedefang-notify(7) on Linux
The text 6e9bc6156742, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
Conventions used by mimedefang-multiplexor(8) to notify an external program of state changes.