Wietse Venema via Postfix-users wrote in
<4xxvvh0xgwzj...@spike.porcupine.org>:
|Vincent Lefevre via Postfix-users:
|[ Charset ISO-8859-1 converted... ]
|> As DMARC protection, some mailing-lists (like postfix-users)
|> rewrite the "From:" header, with at least 2 drawbacks:
|> * This breaks e-mail searching by the "From:" address.
|> * At my work, only the address is changed (without introducing
|> "via <mailing-list>"), so that this is very confusing as mail
|> appears like
|> From: Firstname Lastname <mailing-list-address>
|> and we start seeing users sending private mail to mailing-lists
|> because they did not notice that the address changed.
|
|The "via listname" part is there for a good reason - it is to prevent
|human mistakes like the one you describe.
|
|If something removes "via listname" from postfix-users messages,
|that would be a terrible mistake, and they should stop doing that.
|
|> I was wondering whether I could ask postfix to revert the "From:"
|> header back to the original value, just before the local delivery,
|> at least for lists that keep the original address in some other
|> header ("X-MailFrom:" for postfix-users, "X-Original-From:" for
|> some mailing-lists...). Any idea?
|
|No, but you're welcome to contribute a content filter (Milter) that
|does this. A Milter can be implemented in many programming languages,
|and would work like this:
|
|- Look at each SMFIC_RCPT event and see if the recipient domain is
|local (a configurable list of domains).
|
|- Look at each SMFIC_HEADER event, and see if it is an "X-MailFrom:"
|or "X-Original-From:" header (a configurable list of labels).
That is what Author: is meant for btw.
|- When receiving an SMFIC_EOH (end of headers) event, if there was
|no "From: XXX via YYY" header, replace From: with content from
|"X-MailFrom:" or "X-Original-From:".
In general it is surely only a user interface question if Author:
would finally be adopted.
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
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