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 and Email Forwarding: Why It Breaks and How to Fix It

Learn why email forwarding breaks SPF checks and how solutions like SRS, ARC, and DKIM can fix it. Practical advice for any domain.

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.

SPF PermError: What It Means and How to Fix It

Learn what SPF PermError means and how to fix it. Covers multiple SPF records, the 10 DNS lookup limit, syntax errors, and more.

How to Audit Your SPF Record for Security Gaps

Learn how to analyse your SPF record for security gaps, unused includes, and misconfigurations. A step-by-step SPF audit checklist for better email security.

SPF Subdomain Inheritance: Why Subdomains Do Not Inherit SPF Records

Subdomains don't inherit SPF records from parent domains. Learn why this matters and how to secure every subdomain with the right SPF record.

SPF Records for Subdomains and Multiple Domains

Learn how SPF records work across subdomains and multiple domains. Each subdomain needs its own record — covers setup and redirect.

No SPF Record Found: What It Means and How to Fix It

Getting a 'no SPF record found' error? Learn why your domain is missing an SPF record and how to create one step by step.

SPF Record Not Working? A Step-by-Step Troubleshooting Guide

Your SPF record isn't working and emails are failing authentication. Walk through these systematic troubleshooting steps to find and fix the problem.

SPF Record Too Long: How to Fix SPF Length and Lookup Limits

Fix SPF records exceeding the 255-character or 10 DNS lookup limit. Learn flattening, subdomain splitting, and other techniques.

SPF TempError: What It Means and How to Fix It

Learn what an SPF TempError means, what causes it, how it differs from PermError, and when you need to take action to fix temporary SPF failures.

SPF Void Lookups: The Hidden Limit That Breaks Email Authentication

Learn what SPF void lookups are, how the 2 void lookup limit differs from the 10 DNS lookup limit, and how to find and fix void lookups in your SPF record.