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Re: Recipient is offline

2011-09-05 12:16:57

ODMR is better than POP in retaining the message envelope and not having
the "keep mail on server" loophole.

Loophole?

 C: mail from:<alice@a>
 S: 250 ok
 C: rcpt to:<bob@b>
 S: 250 ok
 C: data
 S: 354 send it
 C: blah blah
 C: .
 S: 452 keep mail on server

For mail reinjected after delivery, there has long been a convention
to retrieve the envelope from the Return-Path: and Delivered-To: or
X-Envelope-To: headers at the top of the message.  Fetchmail does it,
qmail's serialmail does it.

That's one of those things that probably would have been worth puting
in a standards track RFC long ago, but it's too late now.

R's,
John

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