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Re: [ietf-smtp] Is this a valid Message-ID header ?

Valdis Kl ē tnieks <valdis.kletnieks@vt.edu> Fri, 06 March 2020 04:47 UTC

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From: Valdis Kl=?utf-8?Q?=c4=93?=tnieks <valdis.kletnieks@vt.edu>
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To: Mark Andrews <marka@isc.org>
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Date: Thu, 05 Mar 2020 23:46:52 -0500
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Subject: Re: [ietf-smtp] Is this a valid Message-ID header ?
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On Fri, 06 Mar 2020 14:36:18 +1100, Mark Andrews said:
> Conversion of all ASCII headers to utf-8 mime encoded should be banned. Apart
> from testing encoding/decoding it serves no useful purpose and if you want
> to perform such testing you can always add a non ASCII character.  MUA’s that
> do this are deliberately breaking interoperability with old MUAs.

You apparently missed the part where the broken bot was quickly fixed...

(And now that I think about it, exmh was actually meta-buggy in that it
accepted a utf-8 encoded Mime-version: header rather than treat it as
a flat non-Mime mail...)

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