http://bugzilla.spamassassin.org/show_bug.cgi?id=2876
Summary: Fake reply detection
Product: Spamassassin
Version: 2.61
Platform: Other
OS/Version: other
Status: NEW
Severity: normal
Priority: P5
Component: Rules
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Spammers not unusally forget to include a 'In-reply-to:' header when they make
their message look like a reply. That header is nearly always included in
legitimate mail (because MUA's insert it so that threading works right). This is
a test:
header __J_IN_REP_TO In-Reply-To =~ /./
header __J_SUBJ_HAS_RE Subject =~ /^Re:/
meta J_REPLY_WO_IRT (__J_SUBJ_HAS_RE && !__J_IN_REP_TO)
describe J_REPLY_WO_IRT Subject indicates reply but has no In-Reply-To:
score J_REPLY_WO_IRT 2
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