Resources

Guides, tutorials, and tips for SPF records and email authentication.

Guides

The Complete Guide to SPF Records

Everything you need to know about SPF records. Learn what SPF is, how it works, how to set it up, and how to troubleshoot issues.

Articles

How to Add an SPF Record in GoDaddy: Step-by-Step Guide

Add or edit an SPF record in GoDaddy with step-by-step instructions. Covers exact field values, GoDaddy DNS navigation, and verification.

How to Add an SPF Record in Namecheap: Step-by-Step Guide

Learn how to add or edit an SPF record in Namecheap with step-by-step instructions. Covers exact field values, TTL settings, common mistakes, and verification.

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.

How SPF Works: The Complete Authentication Flow Explained

Understand how SPF email authentication works, from DNS lookups to pass/fail results. Learn about mechanisms, qualifiers, and more.

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.

The SPF "a" Mechanism Explained

Learn how the SPF "a" mechanism works, when to use it, its syntax with and without a domain argument, and how it compares to the "mx" mechanism.

SPF "all" Mechanism: Softfail vs Hardfail Explained

Understand the SPF all mechanism and its qualifiers: +all, -all, ~all, and ?all. Learn the difference between softfail and hardfail.

SPF and DNS Records: Understanding Where SPF Lives

Learn how SPF records work within DNS, the relationship between SPF and other DNS record types, and how to find and manage your domain's SPF configuration.

SPF, DKIM, and DMARC Explained

Understand how SPF, DKIM, and DMARC work together to authenticate email and prevent spoofing. A practical, non-technical guide.

SPF FAQ: Frequently Asked Questions About SPF Records

Answers to common SPF questions: multiple records, propagation time, DNS lookups, combining includes, and more. Get your SPF questions answered.

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.

Gmail SPF Record: What Personal Gmail Users Need to Know

Do you need an SPF record for Gmail? Learn when Gmail handles SPF automatically and how to set it up for custom domains.

SPF for Google Workspace: The Complete Setup Guide

Configure SPF for Google Workspace with the correct include statement. Covers adding Google to existing SPF records and verification.

SPF for Mailchimp: Email Authentication Setup Guide

Learn how to configure SPF for Mailchimp campaigns. Covers custom domain authentication, SPF includes, and verifying your Mailchimp email setup.

SPF for Microsoft 365: Complete Setup Guide for Office 365 Email

Set up SPF for Microsoft 365 (Office 365) with the correct include statement. Step-by-step DNS configuration, common mistakes, and how to verify your setup.

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 for Salesforce: Setup Guide and Best Practices

Configure SPF for Salesforce with the correct include statement. Covers Sales Cloud vs Marketing Cloud and adding to existing records.

SPF for SendGrid: Setup Guide and Best Practices

Configure SPF for SendGrid with the correct include statement. Covers adding SendGrid to existing SPF records and verification.

SPF Record Examples: Real-World Records for Every Scenario

Practical SPF record examples for common setups including Google Workspace, Microsoft 365, SendGrid, and multi-provider configurations.

SPF Record Syntax: A Complete Reference Guide

Learn every SPF record syntax element including mechanisms, qualifiers, and modifiers. A plain-English guide with examples.

What is SPF? A Plain-English Guide

Learn what SPF (Sender Policy Framework) is, why it matters for email deliverability, and how it helps prevent email spoofing. No technical jargon required.