This was posted on the SpamAssassin mailling list:
From: "Dianne Skoll" <email@example.com
Date: Friday 5/19/2017 1:30 PM US CDT
Tons of list traffic keeps getting quarantined because of DMARC. For
example, a recent message from David Jones <firstname.lastname@example.org
DMARC policy for domain ena.com suggests Rejection as
DMARC_POLICY_REJECT, but quarantined due to rule settings
$ host -t txt _dmarc.ena.com
_dmarc.ena.com descriptive text "v=DMARC1\; p=reject\; sp=reject\; rua=mailto:email@example.com
(In this instance, we've overridden the DMARC policy and converted it
to quarantine instead of reject, so I was able to retrieve the email, but...)
I'm pretty sure Mailman can do DMARC-munging. Can ezmlm do the equivalent
of Mailman's "ALLOW_FROM_IS_LIST" feature?
I Googled a few things and found the article link in the original ticket description at the top that mentions DMARC filtering lists and a ezmlm patch that may need to be applied. Does the spamassassin.apache.org mailing list have that patch applied to it?