Graham Klyne (GK@Dial.pipex.com)
Wed, 12 Jan 2000 10:43:01 +0000
At 06:23 PM 1/11/00 -0500, Eric.Burger@centigram.com wrote:
>However, the following issue made me fall into the camp that PNDN's are
>something different. DSN's deal with whole messages only. There is no
>mechanism for identifying parts of a message that fail yet having other
>parts being delivered. Either the system delivered the message or it
>didn't.
Indeed.
And if the mechanism to be backwards compatible (with DSN), I believe this
issue needs to be tackled head on. Current DSN 'clients' will be able to
recognize only 'delivered' or 'not-delivered' outcomes.
I think the key question, then, is: does partial delivery constitute a
'delivered' outcome or a 'not-delivered' outcome?
I believe a DSN response should reflect the outcome of this decision (for
the benefit of current DSN clients), and then use additional DSN extension
fields (ignored by current clients) to provide more detailed information
for the benefit of PNDN clients.
#g
------------
Graham Klyne
(GK@ACM.ORG)
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