postsuper(1) on macOS
The text 17671c26704e, as Mac OS X 10.6.8, Mac OS X 10.6.7, Mac OS X 10.6.6, Mac OS X 10.6.5, Mac OS X 10.6.4, Mac OS X 10.6.3, Mac OS X 10.6.2, Mac OS X 10.6.1, Mac OS X 10.6 shipped it.
Postfix superintendent
Flags it lists
-
-H -
-c -
-d -
-h -
-p -
-r -
-s -
-v