On Tue, Jun 28, 2022 at 02:22:09PM +0200, Niklas Cassel via wrote: Hello Peter,
It seems that mailman configuration on qemu-devel is rewriting the "From:" field to "From: Niklas Cassel via <qemu-de...@nongnu.org>" If found this old thread about the same issue: https://qemu-devel.nongnu.narkive.com/6hm8Fbvz/mailing-list-vs-dmarc-and-microsoft-com-s-p-reject-policy Which says that this can happen when using p=reject policy. However, doing a bcc to another of my personal addresses, it looks like the SKIM/SPF/DMARC is all passing, and non of them seem to have p=reject: ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@wdc.com header.s=dkim.wdc.com header.b=TTwPBUcS; spf=pass (google.com: domain of prvs=171ad38db=niklas.cas...@wdc.com designates 216.71.153.141 as permitted sender) smtp.mailfrom="prvs=171ad38db=niklas.cas...@wdc.com"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=wdc.com Return-Path: <prvs=171ad38db=niklas.cas...@wdc.com> Received: from esa3.hgst.iphmx.com (esa3.hgst.iphmx.com. [216.71.153.141]) by mx.google.com with ESMTPS id sd33-20020a1709076e2100b00711f20051f2si13306645ejc.697.2022.06.28.05.22.25 for <nks....@gmail.com> (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 28 Jun 2022 05:22:26 -0700 (PDT) Received-SPF: pass (google.com: domain of prvs=171ad38db=niklas.cas...@wdc.com designates 216.71.153.141 as permitted sender) client-ip=216.71.153.141; Authentication-Results: mx.google.com; dkim=pass header.i=@wdc.com header.s=dkim.wdc.com header.b=TTwPBUcS; spf=pass (google.com: domain of prvs=171ad38db=niklas.cas...@wdc.com designates 216.71.153.141 as permitted sender) smtp.mailfrom="prvs=171ad38db=niklas.cas...@wdc.com"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) Any idea why mailmain is rewriting the "From:" field for my messages? Kind regards, Niklas