SPF Lookup

Check and validate SPF (Sender Policy Framework) records for any domain. Verify email authentication, count DNS lookups, and identify configuration issues.

What is SPF?

SPF (Sender Policy Framework) is an email authentication method that specifies which mail servers are authorized to send email on behalf of your domain. It helps prevent email spoofing and phishing.

An SPF record is a TXT record in your DNS that lists authorized sending sources using mechanisms like include:, ip4:, and ip6:.

The -all mechanism at the end means "reject all other senders" (strict), while ~all means "soft fail" (accept but mark).