<https://forums.FreeBSD.org/threads/can-you-send-email-using-sendmail.61190/>
<http://schema.org/dateModified>
"2017-06-07T11:35:56+00:00"^^<http://schema.org/Date>
<https://forums.freebsd.org/threads/can-you-send-email-using-sendmail.61190/#post-352364>