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Re: [ietf-dkim] versions, Where is the formal definition of DKIM-Signature?

"John R. Levine" <johnl@iecc.com> Sat, 10 February 2018 17:57 UTC

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Date: Sat, 10 Feb 2018 12:55:31 -0500
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From: "John R. Levine" <johnl@iecc.com>
To: Dave Crocker <dcrocker@bbiw.net>
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Cc: DKIM List <ietf-dkim@mipassoc.org>
Subject: Re: [ietf-dkim] versions, Where is the formal definition of DKIM-Signature?
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> Sorry.  Where is the version number for SMTP?

MAIL FROM:<Борис@пример.ru> SMTPUTF8    <--

> These are not 'version' flags.  They are feature indicators.

They're both.  If you use the feature, you're using the new version of the 
message.

R's,
John
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