On Tue 15/Nov/2022 11:59:42 +0100 John Levine wrote:
It appears that Alessandro Vesely <[email protected]> said:
They still do:
550-5.7.1 [62.94.243.226] Messages with multiple addresses in From: header
are
550 5.7.1 not accepted.
ht21-20020a170907609500b0078e1e77f443si1407469ejc.418 - gsmtp
The question is whether they do so because of what we say or if we say so
because of what they do.
Whatever the reason, this reminds us that multi-address From headers are a
tiny tiny nit, not worth the time we've spent on them and certainly not
worth any more. The existing language isn't broken and there is no need to
change it.
No. We can see that either you violate standards by blocking à la Gmail, or
you're open to attack schemes based on exempting messages from DMARC
evaluation. I'd call that broken.
Best
Ale
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