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RE: base64
From: "Rainer Gerhards" <rgerhards () hq adiscon com>
Date: Fri, 26 Sep 2003 21:22:52 +0200

Do all this canonicalization before the message hits your 
attachment 
type policy enforcement and malware scanner, so they only 
have to deal 
with the common forms that everybody handles the same.

With the obvious disadvantage that we're all reduced to using 
the lowest-common-subset of functionality.  Never mind 
inventing or supporting new features, or adding international 
file naming support, in your new email client, because the 
mail server will strip all of that out, anyway.  I don't 
think that's an appropriate answer.

I think it is. Traditionally, newer RFCs *extend* existing ones - they
do not break there formats. So properly engineered new functionality
will either a) live within the boundary of an existing protocol or b)
specifiy a new one. In the case of a) canonocalication will do no harm,
in the case of b) it will not be applied as this is a separate protocol.

Rainer


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