DNS & Email Tools
SPF Record Checker
Fetch and lint SPF TXT records with flattening guidance.
Updated 2025-12-01
Email Security
SPF Record Checker
Validate SPF records, analyze mechanisms, check DNS lookup limits, and identify misconfigurations.
Enter the domain to check its SPF record
About SPF Records
SPF (Sender Policy Framework) allows domain owners to specify which mail servers are authorized to send email on behalf of their domain.
- +all – Allow all (not recommended)
- -all – Fail all non-matching (strict, recommended)
- ~all – Softfail non-matching (moderate)
- ?all – Neutral (permissive)
- Max 10 DNS lookups – includes, a, mx, ptr, exists count toward limit