mimedefang-notify(7) on Linux
The text b25470de2189, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it. The page shows this text now.
Conventions used by mimedefang-multiplexor(8) to notify an external program of state changes.