milter-greylist(8) on Linux
The text 5ce5de2d489b, as Debian 5.0 (Lenny) shipped it.
grey listing filter for sendmail
Flags it lists
-
-A -
-D -
-L -
-M -
-P -
-S -
-T -
-a -
-c -
-d -
-f -
-h -
-l -
-p -
-q -
-r -
-u -
-v -
-w