DNS & NetworkNew
SPF Checker
Find and inspect SPF TXT records used to authorize email senders for a domain.
SPF Checker
DNS & NetworkNewFind and inspect SPF TXT records used to authorize email senders for a domain.
AK
Find SPF TXT records and review the sending policy used by email providers and anti-spoofing checks.
Find SPF TXT records and review the sending policy used by email providers and anti-spoofing checks.
CLI equivalent
dig example.com TXTChecks run from the app server against public hosts. Private, localhost, and internal network targets are blocked for safety.
SPF is an email authentication policy that lists which servers are allowed to send email for a domain.
-all is a hard fail for unauthorized senders, while ~all is a soft fail. Many domains start with soft fail during rollout and move to stricter policy after testing.