all that is output.
--smtp-server::
- If set, specifies the outgoing SMTP server to use. Defaults to
- localhost.
+ If set, specifies the outgoing SMTP server to use. A full
+ pathname of a sendmail-like program can be specified instead;
+ the program must support the `-i` option. Defaults to
+ `/usr/sbin/sendmail` or `/usr/lib/sendmail` if such program is
+ available, or to `localhost` otherwise.
--subject::
Specify the initial subject of the email thread.