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Re: [dane] Comments on draft-wouters-dane-openpgp-02

mrex@sap.com (Martin Rex) Mon, 28 July 2014 14:47 UTC

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In-Reply-To: <1d002b9795bf8f9946f1375fef78abd6@triangulum.uberspace.de>
To: Rene Bartsch <ml@bartschnet.de>
Date: Mon, 28 Jul 2014 16:47:12 +0200
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From: mrex@sap.com
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Subject: Re: [dane] Comments on draft-wouters-dane-openpgp-02
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Rene Bartsch wrote:
> 
> 2. MTAs/SPAM detection systems MUST check if the tupel "sender email 
> address" <-> "sender OpenPGP public key" matches and MUST reject the 
> email in case it does not match with signed messages to prevent address 
> forgery and SPAM.

Terribly bad idea.  Similar to DMARC policies, such behaviour by MTA
would be a true criminal offence when performed by telecommunications
service providers under EU jurisdiction.

This is a check for the receiving MUA to perform.

-Martin

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