ptype,Definition,Description
body,[RFC8601] section 2.3,The property being reported was found in the body of the message.
dns,[RFC8904],The property being reported belongs to the Domain Name System.
header,[RFC8601] section 2.3,The property being reported was found in a header field of the message.
policy,[RFC8601] section 2.3,The property being reported relates to a locally-defined policy.
smtp,[RFC8601] section 2.3,The property being reported is a parameter to an SMTP command used to relay the message.