At 12:27 13-08-2005, Keith Moore wrote:
I strongly disagree. It is vitally important to distinguish between
"who wrote or authorized this content" and "who authorized the
transmission of this message to this recipient". RFC2822.From is a
close approximation to the first, but not the second. We currently
don't have an SMTP or 2822 field that approximates the second. (for
various reasons neither Sender nor Return-Path/MAIL FROM is close enough).
RFC2822.From is not very effective as a means to determine "who wrote
or authorized this content".
If end-users today are accustomed to thinking the message was sent
by RFC2822.From, they will need to be educated, and they may also
need better MUAs that make the distinction clear. But I don't think
most end-users are this naive or incapable of understanding the
difference. Mailing lists, for example, do not follow this
convention. Nor do forwarded messages. Neither one of these seems
to result in a great deal of user confusion.
Although I am a proponent of education and the need for better MUAs,
I don't see it making a significant difference in the short
term. Most end-users cannot understand the difference.
Most end-users do not subscribe to mailing lists and if they do, they
may sometimes report mail received from the list as spam. :) Those
who do subscribe can only understand that the mail is from a mailing
list if they see the list subject tag.
Regards,
-sm
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