The multipart/report Multipurpose Internet Mail Extensions (MIME)
media type is a general "family" or "container" type for electronic
mail reports of any kind. Although this memo defines only the use of
the multipart/report media type with respect to delivery status
reports, mail processing programs will benefit if a single media type
is used for all kinds of reports.
This memo obsoletes "The Multipart/Report Content Type for the
Reporting of Mail System Administrative Messages", RFC 3462, and
marks RFC 3462 and its predecessor as "Historic". [STANDARDS-TRACK]