Free checkers

Every check includes a full domain report. Pick the check you want first.

• SPF checker

  See whether the record exists, parses, and stays within 10 DNS lookups. Flags +all, which authorizes any sender.

• DMARC checker

  Checks the DMARC record, policy, and configured aggregate-report destinations.

• DKIM checker

  Looks up a selector you provide, or common selectors if you leave the field blank.

• Blocklist checker

  Checks IP addresses found in the domain's A record, MX hosts, and explicit SPF entries.