On mar, 2022-07-26 at 10:09 +0000, Stephan Krinetzki wrote:
Hi,
Hi,
i tried now with a Postfix 3.x -> Mailman
Postfix has en extremely useful setting called debug_peer_list where you can list addresses of machines whose messages you are interested in and the level of detail can be set with debug_peer_level. this will result on very detailed logging of the SMTP conversation.
But, before resorting to this very invasive method, I'd put messages on the HOLD queue and inspect them with postcat, before releasing them to be passed to Mailman. this way, you will be able to see if the subjects are cur "before" reaching Mailman.
Original to Mailman: https://pastebin.com/c4BHeEkJ
Subject: =?utf-8?q?=5BJaninsliste=5D_=5BSAV- LINUX=5D_Notice_from_Sophos_Anti-Virus_on_server=2Eexample=2Ecom?=
After Recieving: https://pastebin.com/JG0NKbjq
Subject: =?utf-8?q?=5BJaninsliste=5D_=5BSAV- LINUX=5D_Notice_from_Sophos_Anti-Virus_on_server=2Eexample=2Ecom?= Both of then show the same Subject: header.
So ...
There is a DKIM signer somewhere fiddling with the subject (twice actually):
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=krinetzki.de; s=2019; t=1658829931; h=from:from:reply-to:subject:subject:date:date:message- id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding;
-- Victoriano Giralt Innovation Director Digital Transformation Vicerectorate University of Malaga +34952131415 SPAIN
Note: signature.asc is the electronic signature of present message A: Yes.
Q: Are you sure ?
A: Because it reverses the logical flow of conversation.
Q: Why is top posting annoying in email ?