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svengo

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  1. Thanks, @petzl! I think that spamcop has a problem parsing this IPv6 header. The following header (report) is working: Received: from mail.svengo.net ([172.22.1.253]) by 2a0cd5e2be4c with LMTP id 84zRCI9BYWHnoAEA7uYd+g (envelope-from <0100017c63e80725-c16e8612-b94b-4532-82b4-6366020fae8d-000000@amazonses.com>) for <x>; Sat, 09 Oct 2021 09:15:27 +0200 Received: from a8-62.smtp-out.amazonses.com (a8-62.smtp-out.amazonses.com [54.240.8.62]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.svengo.net (Postcow) with ESMTPS id 206B61C06E4 for <x>; Sat, 9 Oct 2021 09:15:25 +0200 (CEST)
  2. Here is a fresh one: https://www.spamcop.net/sc?id=z6725802547z647d3fef856246128a514ea93610cbaaz Thanks in advance!
  3. Normally SpamCop should ignore the internal redirects, right? It works fine otherwise, but not with this header. Besides that, fd4d:6169:6c63:6f77::b is listed as "Relaying IPsv6" on the mailhost page.
  4. I am using the mailcow e-mail stack. Of course I learned the host and all forwarded adrresses. Spamcop has problems parsing the upper received-header which is internal. fd4d:x is an internal and unroutable address (RFC 4193). Interesting is the header underneath, from which the actual sending system can be seen. Return-Path: <dkryan@wwdb.org> Delivered-To: x Received: from mail.svengo.net ([fd4d:6169:6c63:6f77::b]) by 46850f6954c1 with LMTP id IPLuNUsVXmFsxAAAxGfoPw (envelope-from <dkryan@wwdb.org>) for <x>; Wed, 06 Oct 2021 23:29:47 +0200 Received: from cyan.elm.relay.mailchannels.net (cyan.elm.relay.mailchannels.net [23.83.212.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.svengo.net (Postcow) with ESMTPS id DC3D01C06D6 for <x>; Wed, 6 Oct 2021 23:29:44 +0200 (CEST) Parsing headers is interrupted: host fd4d:6169:6c63:6f77:0:0:0:b (getting name) no name 0: Received: from mail.svengo.net ([fd4d:6169:6c63:6f77::b]) by 46850f6954c1 with LMTP id IPLuNUsVXmFsxAAAxGfoPw (envelope-from <dkryan@wwdb.org>) for <x>; Wed, 06 Oct 2021 23:29:47 +0200 No unique hostname found for source: fd4d:6169:6c63:6f77:0:0:0:b Possible forgery. Supposed receiving system not associated with any of your mailhosts Will not trust this Received line. Mailhost configuration problem, identified internal IP as source Mailhost: Please correct this situation - register every email address where you receive spam No source IP address found, cannot proceed. Re-learning the host does not work. I am currently removing the header as a workaround.
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