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Checkers · Validation tools

SPF record checker

Look up a domain's SPF record and see how its mail policy is configured — hard fail, soft fail, or wide open.

Runs in your browser No signup Free forever Uses Google's public DNS API

Domain name

Enter a domain and check — its SPF record and a breakdown of what it means will appear here.

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How it works

Two steps, no account

1

Enter a domain

Just the domain name, not a full email address or URL — e.g. example.com.

2

Read the breakdown

The raw record, a plain-language analysis of its policy, and a mechanism-by-mechanism table of what each part does.

FAQ

Common questions

What is an SPF record for?
It's a DNS TXT record that lists which mail servers are allowed to send email on behalf of a domain, so receiving mail servers can reject messages forged to look like they came from you.
What's the difference between ~all and -all?
-all (hard fail) tells receiving servers to reject mail from unauthorized senders outright. ~all (soft fail) asks them to accept it but mark it as suspicious — often used temporarily while rolling out a new SPF policy before switching to a hard fail.
Is my domain name sent anywhere?
Yes — looking up a DNS record inherently requires asking a DNS resolver. This tool queries Google's public DNS-over-HTTPS API (dns.google) directly from your browser; the domain isn't sent to, or stored by, GoConverter's own servers.
Why does "no SPF record found" appear for a domain I know sends mail?
Some domains delegate outbound mail entirely to a subdomain or a third-party sender, or simply haven't published SPF at all — which is itself worth knowing, since it means anyone can forge mail claiming to be from that domain without an SPF check ever catching it.
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SPF Record Checker

Our SPF Record Checker helps you validate and analyze Sender Policy Framework (SPF) records for any domain, ensuring proper email authentication setup.

How to Use the Checker

1. Check Your Domain

  • Enter domain name
  • Click check button
  • View instant results
  • Analyze details

2. Available Analysis

Basic Checks

  • SPF record presence
  • Record syntax
  • Multiple records
  • DNS lookups

Detailed Analysis

  • Record components
  • Mechanism types
  • Policy settings
  • Include statements

Key Features

Analysis Options

  1. Record Validation

    • Syntax check
    • Length verification
    • DNS validation
    • Lookup count

  2. Policy Analysis

    • All mechanism
    • Include statements
    • IP mechanisms
    • Modifiers

  3. Detailed Breakdown

    • Record components
    • Prefix meanings
    • Mechanism types
    • Full descriptions

Use Cases

1. Email Setup

  • Domain verification
  • SPF implementation
  • Policy configuration
  • Authentication setup

2. Security Audit

  • Record validation
  • Policy review
  • Security assessment
  • Configuration check

3. Troubleshooting

  • Email delivery
  • Authentication issues
  • Configuration errors
  • Policy problems

Technical Features

  • Real-time Check: Instant validation
  • Detailed Analysis: Complete breakdown
  • Visual Results: Clear presentation
  • Comprehensive Tests: Multiple checks

Why Use Our Checker

1. Comprehensive Analysis

  • Complete validation
  • Detailed results
  • Clear explanations
  • Policy review

2. User-Friendly Design

  • Simple interface
  • Clear results
  • Visual feedback
  • Easy interpretation

3. Technical Benefits

  • DNS verification
  • Syntax validation
  • Policy analysis
  • Configuration check

Understanding SPF Records

Key Concepts

  1. Basic Components

    • Version string
    • Mechanisms
    • Modifiers
    • All directive

  2. Policy Types

    • Hard fail
    • Soft fail
    • Neutral
    • Pass

  3. Mechanisms

    • IP addresses
    • Domain includes
    • MX records
    • A records

Best Practices

  1. Record Setup

    • Single record
    • Clear policy
    • Limited lookups
    • Proper syntax

  2. Policy Configuration

    • Appropriate fail type
    • Required includes
    • IP definitions
    • Lookup limits

Additional Considerations

1. Technical Aspects

  • DNS configuration
  • Record syntax
  • Lookup limits
  • Policy effects

2. Security Impact

  • Email authentication
  • Spam prevention
  • Spoofing protection
  • Delivery reliability

3. Implementation

  • Record creation
  • Policy selection
  • Include management
  • IP authorization

Tips for Users

  1. Before Checking

    • Verify domain
    • Check DNS
    • Note requirements
    • Prepare changes

  2. During Analysis

    • Review results
    • Check warnings
    • Note issues
    • Verify details

  3. After Results

    • Document findings
    • Plan updates
    • Implement changes
    • Recheck configuration