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; 
[email protected]; [email protected] 
Feb 20 06:28:39 s2 policyd-spf[20438]: Pass; identity=mailfrom; 
client-ip=8.8.178.116; helo=mx2.freebsd.org; 
[email protected]; [email protected] 
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=<[email protected]>
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 [email protected] 
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; 
[email protected]; [email protected] 
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=<[email protected]>
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=<[email protected]> 
to=<[email protected]> proto=ESMTP helo=<mx2.freebsd.org>

-- 
Mit besten Grüßen
Joachim Fahrner

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