SPF record generator
Prevent email spoofing and improve deliverability
How Skysnag Simplifies SPF
Skysnag automates SPF record management, ensuring your records are optimized, up-to-date, and never exceed the DNS lookup limit that can cause authentication failures.
Automatic Flattening
Convert nested SPF records to avoid the 10 DNS lookup limit
Source Discovery
Automatically detect all legitimate email sources for your domain
Real-time Updates
Keep your SPF record current as your email infrastructure changes
Validation Testing
Continuously test your SPF record to ensure it's working correctly
DMARC Alignment
Ensure your SPF record aligns properly with your DMARC policy
Performance Monitoring
Monitor SPF authentication rates and identify delivery issues
What is SPF?
SPF (Sender Policy Framework) is an email authentication method that allows domain owners to specify which IP addresses and mail servers are authorized to send email on behalf of their domain. It helps prevent email spoofing and improves deliverability.
Sender Authorization
Define which IP addresses and servers are authorized to send email on behalf of your domain.
Prevent Email Spoofing
Stop unauthorized senders from impersonating your domain in phishing attacks.
Improve Deliverability
Increase the likelihood that your legitimate emails reach the inbox instead of spam folders.
Reduce DNS Lookups
Optimize SPF records to avoid the 10 DNS lookup limit that can cause authentication failures.
SPF Record Mechanisms
SPF records end with an "all" mechanism that defines what happens to emails that don't match any of the authorized senders:
Transitional protection
~all
Soft fail - mark messages that fail SPF check as suspicious
Maximum protection
-all
Hard fail - reject messages that fail SPF check
Not recommended
?all
Neutral - take no action based on SPF check
SPF Implementation Results
See the impact of optimized SPF implementation with Skysnag
99.8%
SPF authentication rate
85%
reduction in DNS lookup failures
100%
automated record maintenance
24/7
monitoring and optimization
