>From: Brad Knowles <[log in to unmask]>
>
>> Filtering MAIL FROM: is not mentioned anywhere in RFC 1123, AND IS BREAKING
>> EXISTING, LEGITIMATE, E-MAIL.
>
>    As has been quoted here before:
>
>           RFCs 821, 822, and 1123 specify how email should be
>       done in a Perfect World by the Angels, for the Angels, and
>       of the Angels.
>
>           However, this is 1997 -- there are no more Angels
>       left, and this is about the most imperfect world as could
>       possibly exist.
>
>
    Hey, Brad - that you speaking about ? It is only draft and there are
a lot of arguments against it. For exam, address in MAIL FROM was
constructed to return errors from mail-transfer-agent (look sendmail),
and address in From: is for user-agent. And routing in MAIL FROM can be
used to deliver transfer errors in any case, even you can't send
mail to From: address.

   (If you want to protect users from spam you can use something
more beautifull)

>    Lose your love affair with that part of RFC 1123, because it
>*is* going away, sooner or later.  Maybe not with whatever will
>become of draft-ietf-drums-smtpupd-04.txt, but sooner or later it
>*will* go away.
>
    If this draft would be incompatible with SMTP (all RFCs set) and practice,
please request and use ANOTHER TCP port for this service. Period.

                                        - Leonid Yegoshin, LY22