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From: mp@andante.att.com (Mark Plotnick)
Newsgroups: comp.mail.misc
Subject: should transport system rewrite To: lines?
Message-ID: <49652@andante.att.com>
Date: 11 Feb 91 20:26:20 GMT
Reply-To: mp@andante.att.com (Mark Plotnick)
Organization: AT&T Bell Laboratories, Murray Hill, NJ
Lines: 26

The sendmail config files we inherited don't do much recipient
address rewriting.  One person has pointed out that when he
sends mail like this:

	From: ps
	To: rb, bb@parc.xerox.com

sendmail doesn't rewrite the To: lines at all (though it does
rewrite the From: line to be ps@andante.att.com).  If the person
at Xerox wants to send a reply to the sender and to everyone in
the To: list, his mailer can't resolve what "rb" should be.

My question is: should we have sendmail rewrite To: lines so
that they're always of the form user@host.domain?  Is there a
way to do so and still avoid obviously incorrect rewrites such
as changing

	From: user@xxx.edu
	To: list

into "To: list@andante.att.com" ?  Or should it be the job of
the mail composer to fill in the To: and Cc: lines correctly in
the first place?

	Mark Plotnick
	mp@allegra.att.com