On Sun 27/Oct/2024 13:18:58 +0100 Richard Clayton wrote:
In message <[email protected]>, Tero Kivinen writes
Richard Clayton writes:
I.e., even if DKIM2 allows me to recover the original email and know
what changes are done, it does not help me to solve the issue that I
do not know if those changes were malicious or not.
you're correct ... that is not (and IMNSHO cannot) be addressed. We did
discuss whether it was possible to limit changes in such a way that you
could not add some HTML (say) which hid the original post and replaced
it with something else. It did not seem possible to be that restrictive
and support what legitimate mailing lists do today.
draft-vesely-dmarc-mlm-transform requires that the footer MUST belong to an
entity of Content-Type: text/plain in all cases. In addition, footers cannot
exceed 10 lines of text, each shorter than 80 characters. If these restrictions
are not met, the transformation cannot be reverted safely.
In addition, it requires that the subject tag length doesn't exceed 20
characters.
The few mailing lists I know of respect those limitations. Anyway, they are
quite easy to comply with. Of course there will always be non-compliant
mailing lists...
Best
Ale
--
_______________________________________________
dmarc mailing list -- [email protected]
To unsubscribe send an email to [email protected]
