DNS, email record, SSL and header checks

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Email DNS Records

These tools check the DNS records that decide where a domain’s mail goes and whether it is trusted. MX Lookup lists the receiving mail servers, SPF Record Checker validates the sender list and counts DNS lookups, DKIM Checker reads the key for a selector and DMARC Checker explains the policy.

Tools in this group

  • DKIM Checker — Type a domain and selector to look up its DKIM record and check the public key.
  • DMARC Checker — Type a domain to look up its DMARC record, check it and see what its policy asks receivers to do.
  • MX Lookup — Type a domain to see which mail servers receive its email, in order, with their addresses.
  • SPF Record Checker — Type a domain to validate its SPF record, count its DNS lookups and test a sending IP address.