Reputation laundering: DKIM signed by 3rd-party domain + bulk marketing body, no List-Unsubscribe
dkim-domain-mismatch-with-bulk-body
What this tier means
High-confidence threat indicator — phishing, impersonation, BEC, or scam pattern. Strong contributor to the trash decision.
How Gorganizer detects this
Reputation laundering via compromised third-party relay: the DKIM signing domain differs from the visible From domain (email signed by a hacked site or university relay rather than the sender's own infrastructure) AND there is no List-Unsubscribe header (legitimate ESPs always add it) AND the body contains 2+ bulk/marketing patterns. This combination fingerprints spam sent through compromised-but-reputable servers to evade IP-reputation blocklists. Score: +3, stacks with dkim-alignment-mismatch +1 for a total of +4 on confirmed cases.
False-positive guard
Every signal in Gorganizer feeds a multi-module score — never a sole verdict. This is a threat-tier signal — it adds a strong contribution to the trash score. The full pipeline still requires convergence across multiple modules + a margin over the safety floor before deletion happens, and Gmail's trash (30-day recovery) is always used — never permanent delete.
About the scoring engine
Gorganizer's scoring engine emits over 1,800 signals across six modules — headers, sender, subject, body, attachments, and structural metadata. Every email is scored by every module independently; the final verdict requires multiple modules to agree and the trash score to beat the safety floor by a margin.
Sacred safety guards — never delete starred emails, replies, calendar invites, receipts/invoices, or attachments — apply unconditionally regardless of any signal.
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