Check and analyze your domain’s DMARC policy instantly — stop spoofing and protect your sending reputation.
DMARC (Domain-based Message Authentication, Reporting & Conformance) ties SPF and DKIM together. It’s a DNS TXT record at _dmarc.yourcompany.com that tells receivers what to do when a message fails authentication — monitor (p=none), quarantine, or reject — and where to send aggregate reports.
p=), the reporting address (rua=) and alignment settings._dmarc in your DNS.p=none to quarantine then reject as your reports come back clean.DMARC is what Google and Yahoo now require from bulk senders. A missing policy — or one stuck on p=none forever — leaves your domain open to spoofing and caps your deliverability ceiling. It’s the third pillar that makes SPF and DKIM enforceable.
Enter your domain above. The tool reads the TXT record at _dmarc.yourdomain.com and parses the policy, reporting and alignment tags.
Start at p=none with a rua= reporting address to gather data, then tighten to quarantine and finally reject once legitimate mail passes.
none only monitors; quarantine sends failing mail to spam; reject blocks it outright. Reject is the end goal, reached gradually.
For senders mailing Gmail and Yahoo in volume, yes — both enforce DMARC alongside SPF and DKIM. Even at lower volume it protects your domain from spoofing.