Title: MIME (Multipurpose Internet Mail Extensions) Part Three: Message Header Extensions for Non-ASCII Text
Author(s): K. Moore.
Status: DRAFT STANDARD
Date: Nov 1996
Length: 33262
Obsoletes: RFC1521, RFC1522, RFC1590
Updated by: RFC2184, RFC2231
STD 11, RFC822, defines a message representation protocol specifying considerable detail about US-ASCII message headers, and leaves the message content, or message body, as flat US-ASCII text. This set of documents, collectively called the Multipurpose Internet Mail Extensions, or MIME, redefines the format of messages to allow for
(1) textual message bodies in character sets other than US-ASCII,
(2) an extensible set of different formats for non-textual message
bodies,
(3) multi-part message bodies, and
(4) textual header information in character sets other than US-ASCII.
These documents are based on earlier work documented in RFC934, STD 11, and RFC1049, but extends and revises them. Because RFC822 said so little about message bodies, these documents are largely orthogonal to (rather than a revision of) RFC822.
This particular document is the third document in the series. It describes extensions to RFC822 to allow non-US-ASCII text data in Internet mail header fields. Other documents in this series include:
+ RFC2045, which specifies the various headers used to describe
the structure of MIME messages.
+ RFC2046, which defines the general structure of the MIME media
typing system and defines an initial set of media types,
+ RFC2048, which specifies various IANA registration procedures
for MIME-related facilities, and
+ RFC2049, which describes MIME conformance criteria and
provides some illustrative examples of MIME message formats,
acknowledgements, and the bibliography.
These documents are revisions of RFCs 1521, 1522, and 1590, which themselves were revisions of RFC1341 and RFC1341. An appendix in RFC2049 describes differences and changes from previous versions.
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