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Microsoft SMTPSVC and DSNs

2005-02-27 15:44:56
Having gotten into the business of generating my own DSNs, I have examined 
DSNs and replies from other mailer more carefully.  I see that the biggest
offender for sending out replies instead of DSNs is Microsoft SMTPSVC.  The
subject says "Delivery Status Notification (failure)", but the MAIL FROM is
<postmaster(_at_)example(_dot_)com> instead of <>.  Ugh.  (Even worse, they 
don't
reject the mail they are rejecting, but accept it, then send it to me wrapped
as a non-DSN claiming to be a DSN saying "we don't want it".)

Now, a question for all you rfc2821 gurus.  If I translate 
<postmaster(_at_)(_dot_)(_dot_)(_dot_)> to <> in an attempt to work around the 
M$ braindamage,
what other problems will that cause?  Since I sign outgoing return paths,
I would end up rejecting all direct (non DSN) email from
<postmaster(_at_)anydomain> (which is good when they come from braindead M$
servers.)  Is this a problem?  Would someone ever need to send me email (as
opposed to a DSN) with a MAIL FROM of <postmaster(_at_)(_dot_)(_dot_)(_dot_)>?

-- 
              Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.


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