Free DMARC Checker: Close the Gaps Spoofers Love to Exploit
Audit your DMARC record in seconds and find out whether your policy actually stops spoofers from sending email that pretends to be your domain.
Full Policy Review
Checks that your record exists, parses correctly, and uses a policy strong enough to block spoofing.
Spoofing Gaps Exposed
A p=none policy monitors but blocks nothing. The checker flags weak settings that leave you open.
Clear Upgrade Path
Get specific guidance on moving from none to quarantine to reject without breaking legitimate mail.
A DMARC checker retrieves the DMARC record on your domain, which tells inbox providers what to do with mail that fails authentication. Without it, anyone can spoof your domain and your legitimate mail is unprotected. This free tool looks up your DMARC record, shows your policy, alignment mode, and reporting addresses, and flags misconfigurations, so you can tighten enforcement, gain visibility into who sends as you, and block spoofing.
What the DMARC checker verifies
The checker looks up the DMARC TXT record at _dmarc on your domain and breaks down each tag. It reports your policy, whether none, quarantine, or reject, which decides how receivers treat failing mail. It confirms the presence of reporting addresses that collect aggregate and forensic data, and it shows your alignment settings for SPF and DKIM. The tool flags common issues such as a missing record, an invalid syntax, a policy left at none long after setup, or a subdomain policy that leaves gaps. Because DMARC builds on SPF and DKIM, the result shows whether your authentication stack works together to protect your domain from impersonation.
How to read results and set your policy
If no record exists, publish one starting at a monitoring policy of none with reporting turned on, so you can see who sends mail as your domain before enforcing. Review the aggregate reports to confirm your legitimate sources, such as your email platform and any third-party senders, all pass alignment. Once trusted sources authenticate cleanly, move your policy to quarantine and then to reject to actively block spoofed mail. If the checker shows a policy stuck at none, treat it as a warning that you are collecting data but not yet protected. Recheck after each change and whenever you add a new sending service, so no legitimate mail is caught.
Why DMARC protects your domain and inbox
DMARC is what turns SPF and DKIM into real protection by telling receivers to act when authentication fails and by reporting back on every source using your domain. Without an enforcing policy, attackers can send phishing and spoofed mail that looks like it came from you, damaging trust and putting recipients at risk. A published, enforced DMARC record blocks that impersonation and signals to mailbox providers that your domain is well managed, which supports deliverability. The reports also reveal shadow senders and misconfigured services you might not know about. Checking your DMARC status regularly keeps your policy correct, your reporting flowing, and your brand harder to forge.
Frequently Asked Questions
What does the DMARC Checker look at?
It fetches your DMARC record from DNS and validates the syntax, policy strength, alignment settings, and reporting addresses. You get a clear picture of whether your domain is actually protected or merely monitored.
My record says p=none. Is that a problem?
It means you are collecting reports but not blocking anything, so spoofed mail sent as your domain still lands. It is the right starting point, but by 2026 mailbox providers expect senders to move toward quarantine or reject.
Is the DMARC Checker free?
Yes. Create a free Brainito account and run checks as often as you like. It is worth re-checking after any DNS change and before ramping up email volume, since DMARC issues are cheap to fix and costly to ignore.
See if your DMARC policy actually protects your domain
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