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About the SPF Record Checker

Read a domain's SPF policy, expand every include, and confirm it stays inside the ten-lookup limit that causes silent failures when exceeded.

• Full expansion of includes and redirects
• Counts DNS lookups against the limit of ten
• Flags syntax errors and multiple SPF records

Frequently asked questions

What happens if SPF exceeds ten DNS lookups?

Receiving servers return a permanent error and may treat your mail as unauthenticated, so legitimate messages can land in spam.

Can I have two SPF records?

No. A domain must publish exactly one; two records cause validation to fail entirely.

Related tools

• DNS LookupLook up DNS records for any domain: A, AAAA, MX, TXT, CNAME, NS, SOA and more. DNS lookup with instant results.
• TXT Record LookupLook up TXT records for any domain, including SPF, DKIM, DMARC and site verification strings. Instant DNS TXT checker.
• DKIM Record LookupLook up and validate DKIM records by selector. Confirm your signing key is published correctly for email authentication. Instant.
• DMARC CheckerCheck a domain's DMARC record and policy. See enforcement level, reporting addresses and alignment settings. Instant.
• Blacklist CheckerCheck whether an IPv4 address or a domain is listed on major email blacklists and RBLs, with the reason and a delisting link. Find out why mail is rejected.
• Domain & IP LookupLook up everything about a domain or IP in one go: DNS records, Whois, geolocation, SSL and HTTP headers. Instant, no signup.

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