SPF Record Checker
Validate your domain's Sender Policy Framework record. Detect syntax errors and authentication issues.
What is SPF?
SPF (Sender Policy Framework) is a DNS record that specifies which mail servers can send email on behalf of your domain.
Why SPF Matters
Without a valid SPF record, receiving servers may reject or spam-filter your emails, hurting deliverability.
Common Issues
Too many DNS lookups (10 max), missing include statements, or overly permissive +all mechanisms.
Best Practices
Use ~all (softfail) during testing, then switch to -all (hardfail) once all senders are configured.