SPF Checker

The Untangled Labs SPF Checker fetches and parses the SPF TXT record for any domain. It validates syntax, counts recursive DNS lookups against the 10-lookup RFC limit, identifies the enforcement qualifier (pass, softfail, hardfail, neutral), and flags common misconfigurations including multiple SPF records and overly permissive policies. Essential for diagnosing email deliverability problems. Free, no account required.