On 1/10/2026 6:18 am, John Levine wrote:
In any event I agree with Richard that even 32K is a lot of headers and it's
not likely to be a problem
unless people are deleting large executable attacchments and trying to describe
that in the diffs which serves them right.
I disagree. Last week I received an email with headers just shy of 25KB.
That e-mail contained a single DKIM signature and no ARC. Add multiple
signatures, perhaps double signed and eventually PQ, and 32KB isn't a
lot of headroom.
The bulk is mostly X headers, but a large chunk of it is in the
References headers, because users keep reusing to the same e-mail as
their template. You can't change user behaviour.
What about minor edits to bodies encoded using base64? How are they
described?
Regards,
R. Latimer
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