No DMARC record found: Fix this critical mistake
Security Boulevard, Thursday, December 18th, 2025
If a Domain-based Message Authentication, Reporting, and Conformance (DMARC) checker reports 'no DMARC record found' for your domain, it means there's no valid DMARC TXT record in the DNS. In other words, that domain has no DMARC protection at all.
That single gap has significant consequences. Without DMARC, attackers can spoof your domain and send phishing or Business Email Compromise (BEC) messages that look legitimate to customers, suppliers, and your own employees.
Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) help, but they aren't enough on their own. They prove who's allowed to send and that the content hasn't been tampered with, but they don't define what should happen when a message fails authentication checks. DMARC tells receivers how to treat suspicious messages.