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Bulk domain checker

Check your clients' DMARC, SPF and DKIM records before you set up monitoring.

Up to 25 domains, one per line or separated by commas. No account needed.

Anyone with the report link can see the list and results. The link expires after 30 days.

DNS records

Public DNS shows each domain's published policy and sending records. DMARC reports show which senders pass in real mail.

We try common DKIM selectors. A missing result does not prove a domain has no DKIM key.

You can run 3 scans an hour from your network. DNS results are reused for up to an hour.

For a single domain, use the combined checker.