RFC 4408 on Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1

A new Request for Comments is now available in online RFC libraries.

        RFC 4408

        Title:      Sender Policy Framework (SPF) for 
                    Authorizing Use of Domains in E-Mail, 
                    Version 1 
        Author:     M. Wong, W. Schlitt
        Status:     Experimental
        Date:       April 2006
        Mailbox:    mengwong+spf@pobox.com, 
                    wayne@schlitt.net
        Pages:      48
        Characters: 105009
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-schlitt-spf-classic-02.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4408.txt

E-mail on the Internet can be forged in a number of ways.  In
particular, existing protocols place no restriction on what a sending
host can use as the reverse-path of a message or the domain given on
the SMTP HELO/EHLO commands.  This document describes version 1 of
the ender Policy Framework (SPF) protocol, whereby a domain may
explicitly authorize the hosts that are allowed to use its domain
name, and a receiving host may check such authorization.  This memo defines an Experimental Protocol for the Internet community.

EXPERIMENTAL: This memo defines an Experimental Protocol for the Internet 
community. It does not specify an Internet standard of any kind. 
Discussion and suggestions for improvement are requested.  Distribution 
of this memo is unlimited.

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute

...

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