On Wed, 5 Dec 2007, Dave Crocker wrote:
How would you describe what they do do?
Sendmail and (recent versions of) Postfix never add a Sender: field to the
header. Exim (by default) adds a Sender: field corresponding to the
authenticated sender if this is different from the From: field, which is
what 822 and 2822 and 4409 suggest. Traditional Unix MUAs don't bother
showing the Sender: field, but Microsoft Outlook is quite keen on it.
Therefore in our environment messages from role addresses tend to show up
in Outlook as "from person on behalf of role" which is annoying. I'm
inclined to give up on adding Sender: fields as specified and instead use
non-standard annotations in the Received: fields to record the
authenticated sender (as in this message).
f.a.n.finch <dot(_at_)dotat(_dot_)at> http://dotat.at/
FITZROY SOLE LUNDY FASTNET: WESTERLY 7 TO SEVERE GALE 9, PERHAPS STORM 10
LATER IN SOLE, LUNDY AND FASTNET. ROUGH OR VERY ROUGH, OCCASIONALLY HIGH. RAIN
THEN SQUALLY SHOWERS. MODERATE OR GOOD, OCCASIONALLY POOR.
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