Date: Tue, 01 Dec 2009 16:05:17 -0800 From: Chuck Swiger <cswiger@mac.com> To: Gary Kline <kline@thought.org> Cc: FreeBSD Mailing List <freebsd-questions@FreeBSD.ORG> Subject: Re: How known? Message-ID: <8441B02F-BA0B-4D64-A884-77E30DDB22F9@mac.com> In-Reply-To: <20091202000313.GE99059@thought.org> References: <20091201230157.GA99062@thought.org> <9176F7CB-372D-4881-AB8E-FE1803AA9A0A@mac.com> <20091202000313.GE99059@thought.org>
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On Dec 1, 2009, at 4:03 PM, Gary Kline wrote: >> Most mail user agents have an option to enable "read receipts"; they use (or abuse) the DSN or MDN capabilities of the recipient's MTA or MUA. They are not a reliable signal that a human has seen the mail, although they can be used to confirm it at least got to the recipient's mail server or were processed by their MUA. > > What are DSN and MDN, please? Delivery Status Notification, Message Disposition Notification -- -Chuck
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