SPF, DKIM, and DMARC Checker
Inspect SPF, DKIM, DMARC, and MX routing for a domain.
Processed with Bun
This tool uses Bun.dns on the server through the DNS API.
Comma-separated. Default selectors are checked when empty.
About email health
This tool inspects email DNS records for a domain.
It parses SPF permissions, checks DKIM selector records, reads the DMARC policy, and sorts MX hosts by priority.
DMARC is the record that mailbox providers use. It tells them what to do when SPF and DKIM fail. A domain with p=none gets no protection.
Enter a domain. Optionally set DKIM selectors. Then select Inspect.
This tool does not store your input.