On 17.08.22 11:38, Andy Beverley wrote:
Is there any way that I can capture the exact content of an email as
it is delivered by Postfix to an external host? I am looking for
something different to always_bcc or similar, in that I want to
capture the exact email content rather than deliver a copy of it
elsewhere.
The reason is that a recipient host is claiming that DKIM signatures
are broken from my server, despite them being correct for all other
recipients. I would like to take an exact copy of the email as it is
delivered, and run it through an independent DKIM checker (opendkim is
used as a milter to sign the emails).
perhaps you could put the remote IP into debug_peer_list and increase
debug_peer_level
I guess that the remote host doesn't support 8BITMIME and your server signs
8-bit e-mail, which can lead to invalid DKIM signatures.
this is a weaknes of current DKIM standard which doesn't handle this
situation and instead proposes converting to 7-bit prior to signing
try connecting the remote host to see if ehlo results into 8BITMIME line in
response.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
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