DMARC in Amazon SES is configured via DNS. The safest approach is phased: start with monitoring, validate alignment, then enforce.
Quick answer: what DMARC record should you start with?
Start with a monitoring policy:
Use first to collect data, then move to or once legitimate send paths are aligned.
DMARC prerequisites for SES
Before tightening policy, confirm:
- SPF is configured for your sending path
- DKIM is enabled and signing correctly
- MAIL FROM / return-path alignment is understood
- You have a mailbox or processor for aggregate reports (
)
Route 53 + Terraform example
Rollout phases
| Phase | Policy | Objective |
|---|---|---|
| Phase 1 | | Collect report data and find misalignment |
| Phase 2 | | Reduce abuse while monitoring false positives |
| Phase 3 | | Enforce strict protection once stable |
Move to the next phase only after report data is clean for your critical send streams.
Validation workflow after publish
- Confirm DNS propagation and record syntax
- Send controlled test traffic
- Verify SPF/DKIM pass and DMARC alignment
- Review aggregate reports for failing sources
- Track bounce/reject trends before policy tightening
Common SES DMARC mistakes
- Moving to
before report analysis - Ignoring subdomain and third-party sender alignment
- Treating DMARC as one-time DNS work
- Missing operational ownership for report review
SES DMARC rollout checklist
- Validate syntax with DMARC checker and DNS lookup
- Track drift in DMARC monitoring
- Rehearse changes in email sandbox
- Capture reject and bounce signals with email webhooks
- Confirm outcomes via email deliverability test
Final take
DMARC for Amazon SES is easiest to maintain when managed as an ongoing control loop: publish, monitor, tune, and then enforce. That sequence protects both reliability and reputation.