https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7831
Bug ID: 7831
Summary: DKIM_VALID_AU does not get set properly when mailing
from a subdomain
Product: Spamassassin
Version: SVN Trunk (Latest Devel Version)
Hardware: All
OS: All
Status: NEW
Severity: major
Priority: P2
Component: Plugins
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: Undefined
RFC6376[1] states that mail authored from a subdomain of the domain specified
by d= in the DKIM signature are valid unless t=s is set in the DKIM DNS record.
Spamassassin's DKIM plugin fails to handle subdomains correctly, only checking
the sender against the domain specified in the DKIM mail header. This causes
DKIM_VALID_AU not to be set when there is a valid signed DKIM message.
[1] https://tools.ietf.org/html/rfc6376#section-3.10
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