Re: [ietf-smtp] broken signatures, was Curious

John Levine <johnl@taugh.com> Tue, 21 July 2020 20:19 UTC

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From: John Levine <johnl@taugh.com>
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Subject: Re: [ietf-smtp] broken signatures, was Curious
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In article <20200721073749.Horde.BvL2fIPJNN50jFlj5GWcj_e@webmail.aegee.org> you write:
>As useless mail headers do make emails heavier, I am in favour of  
>removing DKIM-Signature headers, that are known to be broken, e.g.  
>because the current host has modified (and resubmitted) the message.   

The amount of bandwidth used by e-mail is a rounding error of the
Internet's total, which is mostly video these dayts, and the amount
used by broken headers is a rounding error on that rounding error.

Look at the headers of the mail in your inbox, particularly mail from
large providers, and you'll find megabytes of headers that nobody is
ever likely to look at or use.  This battle was over decades ago.

R's,
John