Message Header Field for Indicating Message Authentication Status
RFC 5451

Approval announcement
Draft of message to be sent after approval:

From: The IESG <>
To: IETF-Announce <>
Cc: Internet Architecture Board <>,
    RFC Editor <>
Subject: Protocol Action: 'Message Header Field for Indicating 
         Message Authentication Status' to Proposed Standard 

The IESG has approved the following document:

- 'Message Header Field for Indicating Message Authentication Status '
   <draft-kucherawy-sender-auth-header-20.txt> as a Proposed Standard

This document has been reviewed in the IETF but is not the product of an
IETF Working Group. 

The IESG contact person is Lisa Dusseault.

A URL of this Internet-Draft is:

Technical Summary

   This draft introduces a header that passes sender validation
   information in a message to the recipient.  It can be used
   with several validation approaches including DKIM.

Working Group Summary

   This is an individual document, although discussion has taken
   place on  There is opposition to the
   proposal from Doug Otis.  He seems to have an unusual and 
   hard-to-understand model of how email validation should work,
   so I believe there is rough consensus anyway. 

Document Quality

   This header is already implemented.  I asked Barry Leiba 
   and Jim Fenton to review the proposal when asked to publish


   Lisa Dusseault reviewed this for the IESG.