<https://forum.spamcop.net/topic/16747-spam-without-a-body-are-not-accepted-by-spamcop/>
<http://schema.org/dateModified>
"2016-07-11T08:36:20+0000"^^<http://schema.org/Date>
<https://forum.spamcop.net/topic/16747-spam-without-a-body-are-not-accepted-by-spamcop/>