From: Bill Cole (postfixlists-070913billmail.scconsult.com)
Date: Mon Sep 17 2007 - 23:40:36 CDT

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At 11:45 PM -0400 9/17/07, Gerhard Mourani wrote:
>Viktor,
>
>I want to send a message to Joe Bob and get a returned message
>saying/confirming me that Joe Bob has received the message in is
>mailbox. Now I'm confused about who is responsible to send the reply
>saying that Job Bob has received the message, to my knowledges it's
>the MTA who should return this message and not the MUA because the
>mbox is handle and managed by the MTA and confirmation message
>doesn't mean that the recipient has read the message again but just
>that it has been received. Maybe I wrong here but I just want to
>know, find a way to get confirmation from the remote mail server
>that my message to Joe Bob has be delivered into his mailbox on the
>server.

See http://www.postfix.org/DSN_README.html

Of course, you cannot make someone else's mail server send DSN's if
they decide not to. You can only send mail that requests DSN's, set
your own mail server to support them, and hope for the best.

If Joe Bob's mail system is not configured to send DSN's, nothing you
do to your Postfix will overcome that. You need to also understand
that a positive DSN doesn't mean a message has been read or ever will
be read. There are even some mail systems configured to send a
positive DSN as they pipe a message to /dev/null.

--
Bill Cole
billscconsult.com

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