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lanny

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  1. As it turns out this was caused by my sending mailserver (Mailu) which replaces Recevied lines (even in attachments). One solution would be to force Thunderbird to send the attachment as base64-encoded. But I have not found an option for this. I created a ticket in Mailu's tracker https://github.com/Mailu/Mailu/issues/1660 but the behavior seems to stem from Postfix's handling of filters, which for some reason get applied inside the message.
  2. Hi @petzl I hoped the details can be kept non-public but let's look at the real details: https://www.spamcop.net/sc?id=z6675008964zc1dc39ff8aa771b6633043fa7cd917c5z The owners of these IP ranges generally are not very cooperative until they see their IPs show up on bloacklists.
  3. I get lines like the following ones (and 4 more) Received: from authenticated-user (PRIMARY_HOSTNAME [PUBLIC_IP]) Ignored Received: from authenticated-user (PRIMARY_HOSTNAME [PUBLIC_IP]) by fmx10.freemail.private with SMTP; 9 Oct 2020 12:40:37 +0200 Ignored Received: from authenticated-user (PRIMARY_HOSTNAME [PUBLIC_IP]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx.onbox.hu (Postfix) with ESMTPS id 4C74NP0ZfFzbtP for <x>; Fri, 9 Oct 2020 12:40:36 +0200 (CEST) Ignored When I forward the email the source contains proper-looking Received lines like this: Received: from srv2.subonline.live (ip19.ip-51-zzz-169.eu [51.zzz.169.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx.onbox.hu (Postfix) with ESMTPS id 4C74NP0ZfFzbtP for <zzz@freemail.hu>; Fri, 9 Oct 2020 12:40:36 +0200 (CEST) (note: "zzz" my edit) Is there a ticketing system where I can submit the raw input/output privately? Thanks in advance!
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