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Check whether your domain has core email DNS records configured: MX, SPF, and DMARC.
Only includes checks that are practical with stable free APIs and lightweight server-side routes.
Verify MX, SPF, and DMARC records for deliverability setup.
Email deliverability depends almost entirely on three DNS records. The Email DNS Checker validates SPF, DKIM, and DMARC configuration for any domain — surfacing missing records, misconfigurations, and policy gaps that cause messages to land in spam.
p=none to monitor before enforcing.Without DMARC, anyone can spoof your domain in the From header and there is no enforcement path. At minimum, publish a p=none DMARC record to start receiving aggregate reports.
Sender Policy Framework — a DNS TXT record listing IP addresses authorized to send email on behalf of your domain.
DomainKeys Identified Mail — cryptographic email signing that lets receiving servers verify the message was not tampered with in transit.
Anyone can spoof your domain in the From header. DMARC defines how receiving servers handle SPF/DKIM failures and enables reporting.
Check out our technical guides to learn more about how browser-side processing works.
Read Glossary