If your SOC lives in FortiSIEM, DMARCS has probably been the one console your analysts have to leave it for. A DMARC policy gets quietly downgraded, a lookalike domain starts sending mail, a sender IP shows up on a malware feed, and none of it reaches the SIEM unless someone remembers to check DMARCS separately.

That gap is closed. The DMARCS FortiSIEM integration streams DMARCS activity straight into FortiSIEM as native events, so email authentication and brand protection sit inside the same detection and response workflow as everything else you monitor.

What Actually Flows Over

DMARCS sends 24 distinct event types into FortiSIEM, grouped into four tiers:

• Authentication activity: logins, failed logins, SSO events, MFA failures, admin actions
• Email threats: DMARC hard-fails, malware senders, lookalike domains actively sending mail, TLS failures, low compliance rates
• Configuration changes: DNS and policy edits, API key changes, settings changes
• Attack-surface findings: DNSSEC gaps, missing security headers, subdomain takeover risk, expiring certificates, new subdomains appearing

Every event carries a severity score and a MITRE ATT&CK mapping, so it lands in FortiSIEM’s existing views the same way any other vendor’s events do. Your analysts aren’t learning a new taxonomy. A DMARC failure spike shows up next to a firewall alert with the same fields your rules and dashboards already expect.

This is a real DMARC SIEM feed, not a summary or a digest. Individual events, in near real time, with the detail an analyst needs to actually triage rather than just get notified.

What It Unlocks

Once the events are in FortiSIEM, correlation does the rest. We’ve built and validated 24 correlation rules against this event set, and they catch the patterns that matter:

• Credential brute force and password spray against DMARCS logins
• A DMARC policy silently moved from p=reject back to p=none or p=quarantine
• A sender IP for your domain showing up on a malware feed
• A subdomain left exposed to takeover
• MFA brute force and SSO failure spikes
• A successful login that follows a run of failed attempts on the same account

Each of these fires as a FortiSIEM incident, not a DMARCS notification you have to go check for. That’s the actual point of this integration: DMARC and email authentication events become part of the same correlation logic your SIEM already runs against the rest of your environment.

Why It Matters

One pane of glass, genuinely. Without this, an analyst working an incident has to remember DMARCS exists, log into a second console, and manually cross-reference timestamps against what FortiSIEM already showed them. With the DMARCS FortiSIEM integration, that step disappears. Email authentication failures, brand impersonation attempts, and DNS-level policy changes get investigated the same way as any other alert in the queue, in the same tool, by the same people, without the swivel-chair.

For MSSPs and internal SOC teams running FortiSIEM as their primary detection platform, this is what email security SIEM integration should look like: no separate login, no separate escalation path. No gap where an attacker banks on nobody checking a second dashboard.

How to Get It

The integration is live and running in production today. Right now it’s enabled per customer through a lightweight connector deployed on your FortiSIEM collector, pulling your org’s DMARCS events on a short interval and forwarding them into the parser we’ve built and validated. Setup takes about five minutes once your DMARCS API key is scoped for it.

We’re also working with Fortinet directly on an official native connector so this ships as a built-in integration rather than a collector-side add-on. That’s in progress; the current connector already gives you the full event set and rule set today.

If you’re running FortiSIEM and want your DMARCS activity in it, reach out and we’ll get it enabled on your account.