Why prevent upconversion (Re: [EAI] Re: How to prevent....)
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Why prevent upconversion (Re: [EAI] Re: How to prevent....)



So, to paraphrase, you need to make sure you can:

- verify digital signatures on messages (exactly what's needed here may vary per signing technology)
- extract pieces of the message in a format that is the same as that seen by the MTA path, because that's useful for configuring stuff (spam filters, configuration)


Fair summary?

--On 22. mars 2007 18:46 +0200 Kari Hurtta <hurtta+gmane at siilo.fmi.fi> wrote:

Harald Tveit Alvestrand <harald at alvestrand.no> writes in gmane.ietf.ima:

--On 22. mars 2007 14:39 +0000 Charles Lindsey <chl at clerew.man.ac.uk>
wrote:

> I think one of the primary requirements is that the user should be able
> to demand, and be given, a copy of the message as actually received by
> the MDA (plus maybe a few tracing headers added by the storage agent).

Why?

(I can see a couple of possible reasons why you would want this. But I
can't tell from your messages which ones you are thinking of.)

Harald

Well, I have needed these kind functionality at least

         - For debugging
              (as postmaster I usually require to see original message
               -- some time I answer -- sorry, that was not original
               message as received -- before I can help, I want original
               message -- not forwarded text or reformatted message.

               This is usually related to junk filtering)

         - For learn junk filters


Also I can see that MUAs needs to see messages on original form when checking signatures of messages. Most of signature algotihms sign messages on form where no further encoding is not needed. That means that all signed data is encoded to 7-bit.

/ Kari Hurtta


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