DMARC is not one DNS record. It is a controlled removal of ambiguity.
First identify who sends mail as your domain. Then authenticate them. Then enforce. Reversing that order is how legitimate invoices vanish.
Use the runbookCheck the domainVerify current terms directly with EasyDMARC
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Visit EasyDMARC official siteThe rollout
1. List senders
Mailbox provider, website, CRM, newsletter, invoicing, support, HR, scanners and forgotten SaaS.
2. Fix SPF
Authorise actual sending infrastructure. Avoid duplicate SPF records and uncontrolled lookup growth.
3. Enable DKIM
Use provider-specific signing keys and confirm the signing domain aligns with the visible From domain.
4. Publish monitoring
Start with p=none and a controlled aggregate-report destination.
5. Investigate
Classify compliant, broken, forwarded and unknown sources. Remove stale services and fix legitimate failures.
6. Enforce gradually
Move toward quarantine and reject only after normal mail flows are understood and monitored.
What DMARC does not solve
- Lookalike domains registered by attackers.
- Compromised employee accounts sending valid authenticated mail.
- Malicious links or attachments inside otherwise legitimate messages.
- Weak account recovery, shared passwords or missing MFA.
Last reviewed 19 July 2026. DNS, sender requirements and vendor capabilities change. Verify before publishing records.
Continue with EasyDMARC
This opens the provider's official website directly. It is not an affiliate link and SignalBridge earns nothing from the visit.
Visit EasyDMARC official site