Hi!
On 9/6/26 18:49, Vittorio wrote:
Hello Richard,
in the encoding I propose in draft-moccia-dkim2-deployment-profile,
each envelope recipient is carried in its own header, with the address
as the final tag:
DKIM2-Sig-rt: i=1; v=1; [email protected]
Everything after addr= is the address, to the end of the header field.
There is no following tag to separate it from, so an internal "=" - or
a comma or any other character a valid RFC5321 address may contain -
is simply part of the value. The parser reads the structural tags,
reaches addr=, and takes the remainder of the line. No character needs
hiding, because none of them can be mistaken for a separator: there is
no separator after the address to protect.
This is the same reason addresses already travel unencoded in From, To
and Return-Path today. An address in a header field does not break the
header field.
In terms of avoiding base64 in D2-S, this would work probably. However
that would mean correlating yet more header fields with each other for
validation. This goes against streaming which you seemed to like
elsewhere in this thread.
I have something like
tr -dc 'A-Za-z0-9+/=' | base64 -d ; echo
or
tr -dc 'A-Za-z0-9+/=' | base64 -d | jq .
in my shell history. With that, I cope with encoded info in message
headers well enough, especially given that I don't read message headers
every day nowadays (even despite sometimes fielding customer support
issues).
I can acknowledge that the base64 here (in the "mainline" draft) is a
minor annoyance, but solvable.
[...]
Hannah.
--
Hannah Stern
Software Developer
Mail Transfer Development
1&1 Mail & Media Development & Technology GmbH | | |
Phone: +49 721 91374-4519
E-Mail: [email protected] | Web: www.mail-and-media.com www.gmx.net
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Verena Patzelt
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