MIME Part One: Mechanisms for Specifying and Describing the Format of Internet Message Bodies
RFC 1521, “MIME Part One: Mechanisms for Specifying and Describing the Format of Internet Message Bodies”, is a Draft Standard document published in September 1993 by N. Borenstein, N. Freed. It obsoletes RFC 1341. It has since been updated by RFC 1590. It has been obsoleted by RFC 2045, RFC 2046, RFC 2047, RFC 2048, RFC 2049 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document redefines the format of message bodies to allow multi-part textual and non-textual message bodies to be represented and exchanged without loss of information. This is based on earlier work documented in RFC 934 and STD 11, RFC 1049, but extends and revises that work. [STANDARDS-TRACK]
What “Draft Standard” means
A historical maturity level (retired in 2011) that sat between Proposed Standard and Internet Standard and required multiple interoperable implementations.
The canonical text of RFC 1521 is hosted at rfc-editor.org. Available in TXT,PS,PDF,HTML.
- RFC 1520 Exchanging Routing Information Across Provider Boundaries in the CIDR Environment
- RFC 1522 MIME Part Two: Message Header Extensions for Non-ASCII Text
- RFC 1519 Classless Inter-Domain Routing : an Address Assignment and Aggregation Strategy
- RFC 1523 The text/enriched MIME Content-type
- RFC 1518 An Architecture for IP Address Allocation with CIDR
- RFC 1524 A User Agent Configuration Mechanism For Multimedia Mail Format Information
- RFC 1517 Applicability Statement for the Implementation of Classless Inter- Domain Routing
- RFC 1525 Definitions of Managed Objects for Source Routing Bridges