DMARC und Mailinglisten

[Joachim Fahrner]

Hallo,

bei Mailinglisten wird das DMARC wirklich zum Problem. Habe mich jetzt
auf einer Liste angemeldet die nicht DMARC-konform ist und prompt werden
da Mails abgewiesen. Kriegt man das irgendwie in den Griff, ohne DMARC
komplett zu deaktivieren?

Feb 20 06:28:35 s2 postfix/postscreen[20427]: CONNECT from [8.8.178.116]:46715 to [78.46.184.248]:25
Feb 20 06:28:35 s2 postfix/postscreen[20427]: PASS OLD [8.8.178.116]:46715
Feb 20 06:28:36 s2 postfix/smtpd[20429]: connect from mx2.freebsd.org[8.8.178.116]
Feb 20 06:28:37 s2 postfix/smtpd[20429]: Anonymous TLS connection established from mx2.freebsd.org[8.8.178.116]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Feb 20 06:28:39 s2 policyd-spf[20438]: None; identity=helo; client-ip=8.8.178.116; helo=mx2.freebsd.org; envelope-from=owner-freebsd-current at freebsd.org; receiver=jf at fahrner.name 
Feb 20 06:28:39 s2 policyd-spf[20438]: Pass; identity=mailfrom; client-ip=8.8.178.116; helo=mx2.freebsd.org; envelope-from=owner-freebsd-current at freebsd.org; receiver=jf at fahrner.name 
Feb 20 06:28:39 s2 postfix/smtpd[20429]: 7224534141: client=mx2.freebsd.org[8.8.178.116]
Feb 20 06:28:39 s2 postfix/cleanup[20440]: 7224534141: message-id=<464530409.2420401.1424409908005.JavaMail.yahoo at mail.yahoo.com>
Feb 20 06:28:39 s2 opendkim[3180]: 7224534141: mx2.freebsd.org [8.8.178.116] not internal
Feb 20 06:28:39 s2 opendkim[3180]: 7224534141: not authenticated
Feb 20 06:28:40 s2 opendkim[3180]: 7224534141: bad signature data
Feb 20 06:28:40 s2 opendmarc[3192]: 7224534141: authres: s2.fahrner.name;#012#011dkim=fail reason="no signature error" (2048-bit key; insecure) header.d=yahoo.com header.i=@yahoo.com header.b=Bk3hfdot;#012#011dkim-adsp=unknown (insecure policy); dkim-atps=neutral
Feb 20 06:28:40 s2 opendmarc[3192]: 7224534141: recvspf: Pass (sender SPF authorized) identity=mailfrom; client-ip=8.8.178.116; helo=mx2.freebsd.org; envelope-from=owner-freebsd-current at freebsd.org; receiver=jf at fahrner.name 
Feb 20 06:28:40 s2 postfix/pickup[19499]: A037634145: uid=118 from=<opendmarc>
Feb 20 06:28:40 s2 postfix/cleanup[20444]: A037634145: message-id=<20150220052840.A037634145 at s2.fahrner.name>
Feb 20 06:28:40 s2 opendmarc[3192]: 7224534141: yahoo.com fail
Feb 20 06:28:40 s2 opendkim[3180]: A037634145: DKIM-Signature header added (s=mail, d=fahrner.name)
Feb 20 06:28:40 s2 postfix/cleanup[20440]: 7224534141: milter-reject: END-OF-MESSAGE from mx2.freebsd.org[8.8.178.116]: 5.7.1 rejected by DMARC policy for yahoo.com; from=<owner-freebsd-current at freebsd.org> to=<jf at fahrner.name> proto=ESMTP helo=<mx2.freebsd.org>

-- 
Mit besten Grüßen
Joachim Fahrner