What is DMARC?
DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that protects your domain from unauthorized use — commonly known as email spoofing and phishing.
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DMARC builds on two existing email authentication mechanisms: SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail). It adds a critical layer by telling receiving mail servers what to do when neither SPF nor DKIM passes — and provides a reporting mechanism so domain owners can see who's sending email on their behalf.
When an email arrives, the receiving server checks the DMARC record published in your domain's DNS. The DMARC record specifies your policy (none, quarantine, or reject) and where to send aggregate reports about email authentication results.
DMARC Policies Explained
p=none (Monitor)
No enforcement. Emails that fail DMARC are delivered normally. Use this when first implementing DMARC to monitor traffic without affecting delivery.
p=quarantine
Suspicious emails are sent to the spam folder. This provides moderate protection while you fine-tune your authenticated senders.
p=reject (Recommended)
Emails that fail DMARC are rejected entirely. This is the strongest protection and prevents spoofed emails from reaching recipients at all.
What Does a DMARC Record Look Like?
This record tells mail servers to reject 100% of messages that fail DMARC checks, and send aggregate reports to your specified email address.
Why You Need DMARC
Without DMARC, anyone can send emails that appear to come from your domain. This exposes your organization to phishing attacks targeting your customers, partners, and employees. DMARC gives you visibility and control over your email channel.
How SpoofWard Helps
SpoofWard automates DMARC monitoring by ingesting your aggregate reports, analyzing sending patterns, detecting unauthorized senders, and guiding you step-by-step from monitoring (p=none) to full enforcement (p=reject) — without the risk of breaking legitimate email delivery.
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