heh -- there are multiple forms of From-munging, i guess. This test wasn't
about the "From:" header field (which i think is what you're talking about).
This test was about the "From " in the body of the message getting prefixed
with a ">" character, which it did.
It's a relic of the old mbox format, where each message started with a line
with "From ", so the message bodies that had that got a > prepended to them so
that they wouldn't start a new message. This shouldn't really be happening on
modern systems for new messages, though, since there are much better formats
than mbox available today. (and, if you are for some reason obliged to use
mbox, there are known reversible ways to from-munge, so that when messages
transit through an mbox they don't come out modified.)
If you're interested in helping diagnose or fix this on IETF infrastructure,
it's probably best to follow up on
https://github.com/ietf-tools/mailarch/issues/3487
--dkg
Sent with [ProtonMail](https://protonmail.com/) secure email.
------- Original Message -------
On Wednesday, March 30th, 2022 at 11:18 AM, Todd Herr
<todd.herr=40valimail(_dot_)com(_at_)dmarc(_dot_)ietf(_dot_)org> wrote:
On Wed, Mar 30, 2022 at 1:04 AM dkg
<dkg=40protonmail(_dot_)com(_at_)dmarc(_dot_)ietf(_dot_)org> wrote:
Sorry for the noise. I'm just confirming that From-munging still happens on
IETF mailing lists (see https://github.com/ietf-tools/mailarch/issues/3487)
From protonmail, this is an unsigned message.
My understanding has always been that the munging happens if the original
Author Domain has published a DMARC policy that isn't p=none, like
protonmail.com has done:
$ dig +short _dmarc.protonmail.com txt
"v=DMARC1; p=quarantine; fo=1; aspf=s; adkim=s;"
--
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