When a mail server receives an email, it queries the sender domain's SPF record to check if the sending server's IP is in the allowed list. If it matches, the email passes; if not, it may be rejected or marked as spam.

SPF Record Checker - Online DNS SPF Lookup

Q: What are common SPF issues?

Common issues include: 1) Missing SPF record; 2) DNS lookups exceeding the 10-query limit; 3) Using ~all (softfail) instead of -all (hard fail); 4) Not including all legitimate sending sources; 5) Having multiple SPF records.

📋 How to Use

Enter domain — Enter the domain name you want to check, e.g. example.com
Click Check — Click the Check button to query the domain's SPF records via DNS over HTTPS
Review results — Review SPF record details including all mechanisms, qualifiers, and potential issues

Online SPF record lookup, verify email sending policies, detect configuration issues

❓ FAQ

What is an SPF record?

SPF (Sender Policy Framework) record is a DNS TXT record that specifies which mail servers are authorized to send email on behalf of a domain, helping prevent email spoofing and spam.

How does SPF work?

When a receiving mail server gets an email, it queries the sender domain's SPF record to check if the sending server IP is in the allowed list. A match passes; a mismatch may result in rejection or spam marking.

What are common SPF issues?

Common issues: missing SPF record, DNS lookups exceeding the 10-query limit, using ~all instead of -all, not including all legitimate senders, having multiple SPF records.

What do SPF qualifiers mean?

+ means Pass (default), - means Fail (reject), ~ means SoftFail (mark but don't reject), ? means Neutral (no assertion). Using -all is recommended for best protection.

❓ Frequently Asked Questions

Is my data safe when using ️ SPF Record Checker?

Absolutely. All processing happens locally in your browser. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.

Does ️ SPF Record Checker upload my data to a server?

No. ️ SPF Record Checker uses client-side processing — everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.

Can I use ️ SPF Record Checker on my phone?

Yes. ️ SPF Record Checker is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.

Are there any usage limits for ️ SPF Record Checker?

️ SPF Record Checker has no usage limits — it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.

Do I need to install any software?

No. ️ SPF Record Checker is a web-based tool — just open it in your browser and start using it. No downloads, plugins, or extensions required.

🛡️ SPF Record Checker