ietf-smtp
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Re: Sender's Declaration of Identity

2005-05-17 04:20:06

On Sun May 15 2005 21:23, David MacQuigg wrote:
My main concern is backward compatibility.  Here are the 
relevant paragraphs:

    EHLO  mailserver7.my-company.com
    ID  mycompany.com
    MAIL FROM: bob(_at_)sales(_dot_)my-company(_dot_)com

    ...

    The proposed syntax will require extension of SMTP standard [RFC-
    2821] and changes in current MTA software and practices.  See section
    7. IANA Considerations.

    MTA software will need to be enhanced and deployed at sites that
    provide email authentication.  To minimize upgrade efforts these
    changes should be bundled with the upgrade to enable authentication.

    Receivers that don't recognize the ID command should return a Reply
    Code 500 COMMAND UNRECOGNIZED.
[...]

This is NOT backward compatible.  See separate message on ietf-smtp for
an overview and pointers to detailed references.