Subject: rfc2046

From: Sergey Poznyakoff <[email-masked]>
Date: Sat, 26 Nov 2011 22:45:20 +0200

An excerpt from RFC 2046 regarding message/rfc822.

Subject: Re: RFC822 Subtype
From: Sergey Poznyakoff <[email-masked]>
To: <[email-masked]>
Date: Wed, 23 Nov 2011 10:33:17 +0200

5.2.1.  RFC822 Subtype

   A media type of "message/rfc822" indicates that the body contains an
   encapsulated message, with the syntax of an RFC 822 message.
   However, unlike top-level RFC 822 messages, the restriction that each
   "message/rfc822" body must include a "From", "Date", and at least one
   destination header is removed and replaced with the requirement that
   at least one of "From", "Subject", or "Date" must be present.