RFC - 4141

SMTP and MIME Extensions for Content Conversion

Original:	ftp://ftp.isi.edu/in-notes/rfc4141.txt
Authors:	K. Toyoda [PCC], D. Crocker [Brandenburg]
Date:	November 2005
Category:	Proposed Standard

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Referred by:	2 RFC
Refers to:	14 RFC

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Status

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2005).

Abstract

A message originator sometimes sends content in a form the recipient cannot process or would prefer not to process a form of lower quality than is preferred. Such content needs to be converted to an acceptable form, with the same information or constrained information (e.g., changing from color to black and white). In a store-and- forward environment, it may be convenient to have this conversion performed by an intermediary. This specification integrates two ESMTP extensions and three MIME content header fields, which defines a cooperative service that permits authorized, accountable content form conversion by intermediaries.

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