I didn't completely follow all of your message. I think we may have
been talking past each other.
On 10/17/2017 06:56 PM, Mark Sapiro wrote:
There's no such thing as a group's address unless the addresses are
listed along with the group name.
Um.... My interpretation of 6854 § 1 and § 4 makes me think that an
empty group list is perfectly acceptable. Further, the group list can
be non-empty and contain the lists posting address.
Anyway, using a group name alone as From: avoids DMARC as there is no
From: address domain for a DMARC lookup.
Agreed.
I would rather do something like the following so that users could reply
to the message. (It would also avoid potential MUA issues as indicated
by RFC 6854.)
I would think that it would be acceptable to use a From "group address"
that is the mailing list. I.e.
From: Mailman Users:mailman-users@python.org;
Possibly even something like the following:
From: Grant via Mailman Users:mailman-users@python.org;
Arguably, this is conceptually very similar to what has become the
defacto method to deal with DMARC today by munging the From:
From: Grant via Mailman Users <mailman-users@python.org>
The difference is that RFC 6854 codifies that there are times to alter
the from. - At least that's how I'm interpreting this.
Further, if you believe the fact that the outbound message is indeed a
completely new message (as I do) then it's completely legit to set the
from to what ever you want. ():-)
That type of forwarding is exactly what is done by Mailman's DMARC Wrap
Message action and that is the reason that action exists. Because in
that case the list message is RFC 5322 compliant. However many MUAs,
particularly mobile apps, have difficulty rendering such a message in a
good way, so Wrap Message isn't always the best option.
It sounds like you're talking about message/rfc822 message attachments.
- That is a viable option.
However I see no reason that you can't take the body copy from the
incoming email and use it directly in the new outgoing email. No need
to message/rfc822 wrap (or other digest like raping) the outgoing message.
--
Grant. . . .
unix || die
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