https://bz.apache.org/SpamAssassin/show_bug.cgi?id=8375
Bug ID: 8375
Summary: AuthRes plugin fails to parse Authentication-Results
with "published-domain-policy" property
Product: Spamassassin
Version: 4.0.2
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Plugins
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: Undefined
I am using SpamAssassin version 4.0.2-rc2 on Ubuntu 25.10. The AuthRes plugin
fails to parse valid Authentication-Results headers generated locally by
fastmails's athentication-milter
(https://github.com/fastmail/authentication_milter).
The parser skips the entire header when it encounters the
"published-domain-policy" property within the DMARC section, even though this
is a valid property according to IANA assignments for Email Authentication
Results.
Debug logs:
Mar 13 17:34:20.806 [362282] dbg: authres: parsing Authentication-Results:
mail.boiafauss.eu; arc=pass (as.2.google.com=pass, ams.2.google.com=pass,
as.1.google.com=pass, ams.1.google.com=pass)
smtp.remote-ip=xxxx:xxxx:xxxx:xxxx::xx; dkim=pass (1024-bit rsa key sha256)
header.d=domain.tld [email protected] header.b=e+qJHyq1 header.a=rsa-sha256
header.s=20170426; dmarc=pass policy.published-domain-policy=none
policy.applied-disposition=none policy.evaluated-disposition=none
(p=none,d=none,d.eval=none) policy.policy-from=p header.from=sub.domain.tld;
iprev=pass smtp.remote-ip=xxxx:xxxx:xxxx:xxxx::xx (mail-vk1-xa34.google.com);
spf=pass smtp.mailfrom="[email protected]" smtp.helo=mail-vk1-xa34.google.com;
x-aligned-from=fail; x-google-dkim=fail (message has been altered, 2048-bit rsa
key) header.d=1e100.net [email protected] header.b=tQ/gSQIW; x-ptr=pass
smtp.helo=mail-vk1-xa34.google.com policy.ptr=mail-vk1-xa34.google.com;
x-return-mx=pass header.domain=sub.domain.tld policy.org_domain=domain.tld
policy.is_org=no (MX Records found: relay-avs.domain.tld); x-return-mx=pass
smtp.domain=gmail.com policy.is_org=yes (MX Records found:
alt3.gmail-smtp-in.l.google.com,gmail-smtp-in.l.google.com,alt2.gmail-smtp-in.l.google.com,alt1.gmail-smtp-in.l.google.com,alt4.gmail-smtp-in.l.google.com);
x-tls=pass smtp.version=TLSv1.3 smtp.cipher=TLS_AES_128_GCM_SHA256
smtp.bits=128
Mar 13 17:34:20.806 [362282] dbg: authres: skipping header, unknown property
for dmarc/policy: published-domain-policy
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