Free SPF Record Checker
Look up and validate any domain's SPF record. See parsed mechanisms, count DNS lookups against the RFC 7208 limit, and get actionable fixes.
SPF Record
DNS Lookups
Lookup Tree
Parsed Mechanisms
| Qualifier | Mechanism | Value | Explanation |
|---|
Issues
Recommendations
What is SPF?
Sender Policy Framework (SPF) is a DNS-based email authentication method that lets domain owners specify which mail servers are authorized to send email on their behalf. Receiving servers check the SPF record to verify the sender, helping prevent spoofing and improve deliverability.
An SPF record is a TXT record on your domain that starts with v=spf1 followed
by a series of mechanisms and modifiers that define your sending policy.
Quick Reference
| Mechanism | Description |
|---|---|
| ip4 / ip6 | Authorize a specific IPv4 or IPv6 address or range |
| include | Include another domain's SPF record (costs 1 DNS lookup) |
| a | Authorize the domain's A/AAAA records (costs 1 DNS lookup) |
| mx | Authorize the domain's MX servers (costs 1 DNS lookup) |
| redirect= | Replace this policy with another domain's SPF record |
| all | Match all senders — qualifier determines the action (pass/fail/softfail/neutral) |
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