arcsign is a filter that reads an RFC822 message on standard input, and writes the same message on standard output with a ARC-Signature lines prepended.
The signing options are specified on the command line:
arcsign selector domain privatekeyfile srv_id
Note: arcsign will only use authentication results header fields with an authserv-id that matches srv_id as the input fields for the ARC chain.
This version of arcsign was written by Brandon Long <firstname.lastname@example.org> and is derived from dkimsign, written by Greg Hewgill <email@example.com>.
This man-page was created by Scott Kitterman <firstname.lastname@example.org> and is licensed under the same terms as dkimpy.