On 10/03/23 08:50, Steffen Nurpmeso via Postfix-users wrote:
Wietse Venema via Postfix-users wrote in
<4pxdmb1f8fzj...@spike.porcupine.org>:
|postfix--- via Postfix-users:
|> Is it the best idea to add a reply-to header to the author on mailing \
|> list emails?
|> The problem I see is many people will hit reply in their email client \
|> which will create an email from them to the author, bypassing the \
|> mailing list.
|> Unless they remember to manually alter the To: field to keep the \
|> conversation on the list, it wont be.
|>
|> Was that the intent?
|
|This (same-domain From: header and DKIM signature) is DMARC damage \
|control.
The very much worth reading RFC 9057 of Dave Crocker defines an
Author: field which can at least be used to fixate the original
From: (or Sender:). It is (hmm,well) a shame that those who do
invent and push things that brake things, at least, do not use it.
Maybe:
* Mung the From: as we do now (we can perhaps do this selectively based
on the DMARC policy of the sender instead of doing it across the board?)
* Add an Author: header reflecting the original From: header (if one
does not already exist).
* Add an Original-From: header reflecting the original From:. This is
also supported by some MUAs.
* Don't add a Reply-To:. I actually question if this is really needed
as we likely want replies to go to the list the vast majority of time
anyways. I have seen other lists explicitly exclude this step and it
works well.
Peter
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