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Re: [Bimi] MUA Evaluation of BIMI

Ken O'Driscoll <ken@wemonitoremail.com> Mon, 14 March 2022 16:27 UTC

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From: Ken O'Driscoll <ken@wemonitoremail.com>
To: "dcrocker@bbiw.net" <dcrocker@bbiw.net>, Trent Adams <tadams@proofpoint.com>
CC: "bimi@ietf.org" <bimi@ietf.org>
Thread-Topic: [Bimi] MUA Evaluation of BIMI
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Date: Mon, 14 Mar 2022 16:27:42 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/bimi/B0IxvJDCpben00oN-UC9bOisEn0>
Subject: Re: [Bimi] MUA Evaluation of BIMI
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> -----Original Message-----
> From: Dave Crocker <dhc@dcrocker.net>
> Sent: Monday 14 March 2022 15:50
> To: Ken O'Driscoll <ken@wemonitoremail.com>; Trent Adams
> <tadams@proofpoint.com>
> Cc: bimi@ietf.org
> Subject: Re: [Bimi] MUA Evaluation of BIMI
>
[...snip...]
> 
> In other words, as an end-to-end service, BIMI really should NOT simply
> defer the question of MTA/MDA/MUA interaction as trust as something left
> to "the user of the MUA to determine".
> 

I completely agree and didn't intend to appear to advocate for a free for all.

If people begin to see value in supporting BIMI at the MUA level, then they will do so with or without the endorsement of the specification. However, if the spec. clearly articulates implementation considerations and risks, then it can only be a good thing.

In particular, the vendors of third-party webmail software that many ISPs white label, would likely benefit from clear published guidance instead of trying to guess best practice.

Ken.

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