Thanks, I will not do any DMARC mitigations for my list.
When I switch to anonymous list, my Headers looks like this: [QUOTE] Authentication-Results: mailserv.er; dkim=none; dmarc=pass (policy=none) header.from=t-online.de; spf=pass (mailserv.er: domain of sender@t-online.de designates 194.25.134.17 as permitted sender) smtp.mailfrom=sender@t-online.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=lists.serv.er; s=dkim; t=1757502340; 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; bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=; b=D54tjBjp9YBqO6kFaKprYwbpPiyCzlyU7sBvXK54AYeXa0kmBg+KllbGMVKjJMQ++31e7l dwUlbBmEN5Ns9kvCCuWofA/YOxmeup3LEN1Ghzr76LsqCLS9TTyRmqbl5ubarlAZ7hcVOk tsWatA31S4IFBUTu9dFMu7X5F7Fb7KoOym6pkOIxD8cqIjT4VNGrx4QTjKQhxqthHaHBX0 cXSJzTGHv7b/tWuNp67kjYU5Hx2k4/V+K+Lvo7z2QMDJQ13vGmX2wTKbxcz0FI0VFCqOqy vXe8pbWmorINdqyajr7b3yPflq3vJK6TgcQ7hh7+jm7W0UY4E03L0JYfOfaIPg== ARC-Authentication-Results: i=1; mailserv.er; dkim=none; dmarc=pass (policy=none) header.from=t-online.de; spf=pass (mailserv.er: domain of sender@t-online.de designates 194.25.134.17 as permitted sender) smtp.mailfrom=sender@t-online.de ARC-Seal: i=1; s=dkim; d=lists.serv.er; t=1757502340; a=rsa-sha256; cv=none; b=c5OYJNi9bU8Nm6cUwzWwdWKUWD3TPRerBX9+cCbNDLztCG/RPlmefYu0ageNZePEagVu5/ wRv+aSB5Q6nFokbO3SYiKNPw7jQdoArp0qT5F+kuv9haAJYwLZmh9Em4ocSm1xbah6re4X Zj5OeLU0WgRqz+tvopwNVxKnjFKg9rEc7MN67KoghSvxjIwijaBlYRlrRh44JSIQiwzoXN 0O4jQ/YlaA9NF0wSEZYF1acfchRmC6igHEZF5255W0wlqTPwThcChwMWrn3F+rSqyngx9/ 9a61HHNQ2tLkWA9IE+3m/97WYttjmkFjcj2XFeSK5TXV93mPZ3TzmjtHO+t2NA== From: Testliste <testliste@lists.serv.er> [END QUOTE]
So ARC signatures are present, FROM ist my list, but smtp.from is still the origininal sender -> SPOOFED_UNAUTH
Ist there any possibility to change smtp.from or to remove it when using anonymous lists?
(I habe found a solution to configure rspamd to whitelist my mailinglist, but I think there should be a better solution, right?)