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Guide · DMARC Operations

DMARC responses that keep stakeholders calm

Translate XML, align senders, and communicate progress without triggering panic. This playbook keeps execs, marketing, and security on the same page during enforcement.

Know your stakeholders

Use these lenses when preparing updates or building dashboards. SendCheck lets you route alerts and reports to the right audience automatically.

Executives

  • Need a top-level view of enforcement progress and brand risk.
  • Care about time-to-resolution when incidents occur.
  • Respond well to heatmaps, percentages, and clear next steps.

SendCheck tip: Use executive dashboards with drift scoring and BIMI readiness to show progress in one slide.

Marketing & Growth

  • Want to know how DMARC impacts campaigns and deliverability KPIs.
  • Care about trusted sender signals (BIMI, brand indicators).
  • Need guidance on coordinating with agencies or partners.

SendCheck tip: Set up domain owner routing so marketing receives alert summaries and BIMI readiness tips via Slack.

Security & IT

  • Require raw forensic data for investigations.
  • Need confidence in SPF/DKIM alignment before flipping policies.
  • Prefer structured playbooks and evidence trails for compliance.

SendCheck tip: Download forensic-friendly CSVs or ingest drift webhooks directly into your SIEM.

Policy roadmap

Stage 1 · Monitor (p=none)

  • Collect aggregate data for 2–4 weeks.
  • Identify legitimate sources without DKIM/SPF alignment.
  • Tag workloads in SendCheck for ownership and follow-up.

Communications plan: Weekly email to stakeholders summarising top failing sources and remediation progress.

Stage 2 · Quarantine (p=quarantine, pct=50)

  • Redirect remaining failing sources into remediation backlog.
  • Enable alerting to marketing/security when rejects occur.
  • Deploy BIMI assets to leverage increased trust.

Communications plan: Slack updates for campaign owners when legitimate mail hits quarantine. Align on deadlines before moving to reject.

Stage 3 · Enforcement (p=reject, pct=100)

  • Reject spoofed mail while maintaining high inbox placement.
  • Publish post-launch metrics (reject volume, support tickets).
  • Schedule quarterly policy reviews and drift drills.

Communications plan: Quarterly deliverability review with executives showing improved trust and reduced spoofing attempts.

Operational workflows

Tag each DMARC failure in SendCheck with the responsible team and severity. Escalate high risk (e.g., payment spoofing) through PagerDuty while low risk flows into Linear for scheduled remediation.

Metrics to surface

  • Aggregate pass rates segmented by domain and provider.
  • Volume of rejected spoof attempts post-enforcement.
  • Number of open remediation tickets with due dates.

Run DMARC incident drills quarterly

Simulate a spoofing attack, rehearse notifications, and validate that SendCheck alerts reach the right teams.

View status playbook

Further reading