SPF checker

What is an SPF Checker?

The SPF Checker looks up a domain's SPF (Sender Policy Framework) TXT record and validates its syntax, checking for common mistakes like a missing "all" mechanism, invalid separators, or malformed lookups.

Why SPF Matters

• Email deliverability — SPF tells receiving mail servers which servers are authorized to send email on behalf of a domain, helping prevent legitimate email from being marked as spam.
• Anti-spoofing — A correctly configured SPF record makes it harder for attackers to forge emails that appear to come from your domain.
• Exactly one record — A domain should have exactly one SPF record; having multiple SPF TXT records is invalid per the specification and can cause validation failures.