SPF Record
Checker
Validate your SPF records and check email authentication
Ensure authorized servers can send on your behalf
SPF Validation
•DNS Lookup Analysis
•Include Chain Check
Check SPF Record
Enter your domain to validate SPF configuration
Record Validation
Validate SPF syntax and mechanisms
DNS Lookup Count
Check against 10 lookup limit
Include Analysis
Trace include mechanisms chain
Understanding SPF Records
Sender Policy Framework (SPF) prevents email spoofing by authorizing mail servers
SPF Components
v=spf1 - Version declaration (always spf1)
include: - Authorize another domain's SPF
ip4:/ip6: - Authorize specific IP addresses
a/mx - Authorize A or MX records
all - Policy for non-matching senders
Best Practices
- •Keep DNS lookups under 10
- •Use ~all for soft fail initially
- •Only one SPF record per domain
- •Avoid multiple include chains
- •Monitor and update regularly