Troubleshooting

Fix common SPF errors, lookup limits, and configuration issues.

Common SPF Errors: Understanding and Fixing SPF Failures

Learn what SPF error codes mean, what causes them, and how to fix common SPF misconfigurations including PermError, SoftFail, and None results.

SPF 10 DNS Lookup Limit: Why It Exists and How to Fix It

Learn about the SPF 10 DNS lookup limit, why exceeding it causes PermError failures, and practical solutions to optimize your SPF record.

SPF Flattening: Benefits, Risks, and When You Need It

Learn what SPF flattening is, how it works, the risks of stale IP addresses, and when to use it versus simpler alternatives for the 10 DNS lookup limit.

SPF for Multiple Email Services: How to Combine Providers

Combine multiple email services into one SPF record. Avoid duplicate records and manage DNS lookup limits with several providers.