Internet Message Format
draft-resnick-rfc5322bis-00

Document Type Active Internet-Draft (individual)
Last updated 2019-12-11
Stream (None)
Intended RFC status (None)
Formats plain text html xml pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                    P. Resnick, Ed.
Internet-Draft                                                  Episteme
Obsoletes: 5322 (if approved)                           11 December 2019
Updates: 4021 (if approved)                                             
Intended status: Standards Track                                        
Expires: 13 June 2020

                        Internet Message Format
                      draft-resnick-rfc5322bis-00

Abstract

   This document specifies the Internet Message Format (IMF), a syntax
   for text messages that are sent between computer users, within the
   framework of "electronic mail" messages.  This specification is a
   revision of Request For Comments (RFC) 5322, itself a revision of
   Request For Comments (RFC) 2822, all of which supersede Request For
   Comments (RFC) 822, "Standard for the Format of ARPA Internet Text
   Messages", updating it to reflect current practice and incorporating
   incremental changes that were specified in other RFCs.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on 13 June 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents (https://trustee.ietf.org/
   license-info) in effect on the date of publication of this document.
   Please review these documents carefully, as they describe your rights

Resnick                   Expires 13 June 2020                  [Page 1]
Internet-Draft           Internet Message Format           December 2019

   and restrictions with respect to this document.  Code Components
   extracted from this document must include Simplified BSD License text
   as described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.2.  Notational Conventions  . . . . . . . . . . . . . . . . .   5
       1.2.1.  Requirements Notation . . . . . . . . . . . . . . . .   5
       1.2.2.  Syntactic Notation  . . . . . . . . . . . . . . . . .   5
       1.2.3.  Structure of This Document  . . . . . . . . . . . . .   5
   2.  Lexical Analysis of Messages  . . . . . . . . . . . . . . . .   6
     2.1.  General Description . . . . . . . . . . . . . . . . . . .   6
       2.1.1.  Line Length Limits  . . . . . . . . . . . . . . . . .   7
     2.2.  Header Fields . . . . . . . . . . . . . . . . . . . . . .   8
       2.2.1.  Unstructured Header Field Bodies  . . . . . . . . . .   8
       2.2.2.  Structured Header Field Bodies  . . . . . . . . . . .   8
       2.2.3.  Long Header Fields  . . . . . . . . . . . . . . . . .   8
     2.3.  Body  . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   3.  Syntax  . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.1.  Introduction  . . . . . . . . . . . . . . . . . . . . . .  10
     3.2.  Lexical Tokens  . . . . . . . . . . . . . . . . . . . . .  10
       3.2.1.  Quoted characters . . . . . . . . . . . . . . . . . .  10
       3.2.2.  Folding White Space and Comments  . . . . . . . . . .  11
       3.2.3.  Atom  . . . . . . . . . . . . . . . . . . . . . . . .  12
       3.2.4.  Quoted Strings  . . . . . . . . . . . . . . . . . . .  13
       3.2.5.  Miscellaneous Tokens  . . . . . . . . . . . . . . . .  14
     3.3.  Date and Time Specification . . . . . . . . . . . . . . .  15
Show full document text