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SPF Record Checker

What is SPF?
SPF (Sender Policy Framework) specifies which mail servers are authorized to send emails on behalf of your domain. This helps prevent email spoofing.

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What is online SPF Record Checker?

The SPF Record Checker is a free online tool that analyzes your domain's Sender Policy Framework (SPF) record to verify email authentication settings. It instantly checks if your domain has a valid SPF record, validates DNS lookups, identifies potential security issues, and provides detailed analysis of all SPF mechanisms. The tool helps prevent email spoofing, reduces spam delivery, and ensures your emails reach recipients' inboxes.

How to use SPF Record Checker?

Use Cases for SPF Record Checker

Frequently Asked Questions

Have questions about SPF Record Checker? Find answers to the most common queries below.

An SPF (Sender Policy Framework) record is a DNS TXT record that specifies which mail servers are authorized to send emails on behalf of your domain. You need it to prevent spammers from spoofing your domain, improve email deliverability, and protect your brand reputation. Without SPF, your legitimate emails may be marked as spam or rejected by recipient servers.
A valid SPF record starts with "v=spf1" and ends with an "all" mechanism (like ~all or -all). It should contain fewer than 10 DNS lookups to comply with RFC standards. Use our SPF checker to instantly verify if your record is properly configured and identify any issues that could affect email delivery.
SPF records are limited to 10 DNS lookups to prevent excessive server queries. Each "include:", "a", "mx", "ptr", and "exists:" mechanism counts as one lookup. Exceeding this limit causes SPF validation to fail, resulting in email delivery problems. If you exceed the limit, consider SPF flattening or reducing include statements.
The "-all" (hard fail) means strictly reject emails from unauthorized servers, while "~all" (soft fail) means mark them as suspicious but still accept them. Most experts recommend using "~all" to avoid false positives while still providing protection. Never use "+all" as it allows any server to send emails for your domain.
No, you can only have ONE SPF record per domain. Having multiple SPF records causes validation failures and email delivery issues. If you use multiple email providers (like Google Workspace and SendGrid), combine them in a single SPF record using multiple "include:" statements.
SPF record changes typically propagate within minutes to a few hours, depending on your DNS TTL (Time To Live) setting. However, some DNS servers may cache the old record for up to 24-48 hours. After updating your SPF record, use our checker to verify the changes have propagated correctly.
If no SPF record exists, you should create one immediately through your domain's DNS management panel. Add a new TXT record with a value like "v=spf1 mx ~all" for basic protection, or include your email provider's SPF (e.g., "v=spf1 include:_spf.google.com ~all" for Google Workspace). Our tool provides specific examples for common email providers.
Security warnings appear when your SPF record uses "+all" (allows any server), has too many DNS lookups (over 10), or contains misconfigurations. These issues make your domain vulnerable to spoofing and can cause email delivery failures. Follow the specific recommendations provided by our checker to fix these security vulnerabilities immediately.