Moved to Historic: RFC 4406 on Sender ID: Authenticating E-Mail Wed, 12 February 2020 19:03 UTC

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RFC 4406 has been reclassified as Historic.
        RFC 4406

        Title:      Sender ID: Authenticating E-Mail 
        Author:     J. Lyon,
                    M. Wong
        Status:     Historic
        Stream:     IETF
        Date:       April 2006
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-lyon-senderid-core-01.txt


        DOI:        10.17487/RFC4406

Internet mail suffers from the fact that much unwanted mail is sent
using spoofed addresses -- "spoofed" in this case means that the address
is used without the permission of the domain owner.  This document
describes a family of tests by which SMTP servers can determine
whether an e-mail address in a received message was used with the
permission of the owner of the domain contained in that e-mail
address.  This memo defines an Experimental Protocol for the Internet community.

HISTORIC: This memo defines a Historic Document for the Internet
community.  It does not specify an Internet standard of any kind.
Distribution of this memo is unlimited.

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