Free tool
Check your SPF, DMARC and DKIM
Enter your domain and see within seconds whether your email authentication is set up properly. No account needed. The check runs entirely in your browser, through EU DNS resolvers (DNS4EU/Quad9). We store nothing and never see your domain.
No DMARC record yet? Put one together right away with the free DMARC record generator.
Want to watch this continuously, not just today?
This check is a snapshot. DuzMarc keeps an eye on your SPF, DMARC and DKIM every day, reports anything out of the ordinary automatically and shows exactly which senders are mailing on behalf of your domain.
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