DMARC Record

This check looks for a DMARC (Domain-based Message Authentication, Reporting & Conformance) record in your domain's DNS settings. DMARC builds on top of SPF and DKIM to provide a complete email authentication system. It checks that the record exists, validates its syntax, and examines the policy setting — which can be 'none' (just monitor), 'quarantine' (send suspicious emails to spam), or 'reject' (block fake emails entirely).

DMARC is the most comprehensive email security standard available today. It tells email providers exactly what to do when they receive an email that fails authentication checks — should they deliver it, quarantine it, or reject it completely? It also provides reporting, so you can see if anyone is trying to impersonate your domain via email.

Without DMARC, your domain is vulnerable to email spoofing attacks where criminals send phishing emails that look like they come from your business. This can lead to financial fraud, data theft, and serious damage to your brand's trustworthiness. For businesses, this is a critical security measure.