[exim-dev] [Bug 1323] $sender_address still points to the or…

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Autor: Phil Pennock
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Para: exim-dev
Asunto: [exim-dev] [Bug 1323] $sender_address still points to the original sender after issuing 'mail' command in a filter
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http://bugs.exim.org/show_bug.cgi?id=1323




--- Comment #3 from Phil Pennock <pdp@???> 2012-12-17 10:37:45 ---
How does it break regular mail?


Also, for clarity: the DKIM folks argue that a DKIM signature is for some
domain that wishes to assert identity and that it's not part of DKIM itself to
argue which domain should be doing that or which headers/envelope it should
match. What people typically use is ADSP or DMARC and it's those two which
specify that DKIM domain identities should match the From: header.

So if you're choosing to sign a message and are setting dkim_domain to
something other than the header derived from From:, then you're not signing in
a way that's compatible with ADSP/DMARC and your signature may not be
interpreted as you hope.


The only exception to this I know if is for mail forwarding with resigning, ie
running a mailing-list, in which case you want to use the email address from
the Sender: header inserted by the MLM instead of an email address chosen from
those present in the From: header.


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