mailbot(1) on Linux
The text a334a733f078, as Debian 7 (Wheezy) shipped it.
A MIME-aware autoresponder utility
Flags it lists
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-D -
-F -
-M -
-N -
-R -
-S -
-T -
-a -
-c -
-d -
-e -
-faddress -
-m -
-n -
-r -
-s -
-t