SPF Record Checker — Free DNS Tool

Enter any domain to retrieve and explain its SPF DNS record. SPF (Sender Policy Framework) tells receiving mail servers which IP addresses are authorized to send email on behalf of your domain.

What is an SPF record?

An SPF record is a type of DNS TXT record that lists all servers authorized to send email for your domain. When a receiving mail server gets an email claiming to be from you@example.com, it checks the SPF record to verify the sending server is allowed.

Common SPF mechanisms

include: — authorize another domain's mail servers (e.g., your email provider)
mx — authorize all servers listed in your MX records
a — authorize your domain's A record IP
ip4: / ip6: — authorize a specific IP address or range
-all — reject all other senders (recommended)
~all — soft fail (mark as spam, not reject)

Why this matters

A missing or broken SPF record can cause your emails to land in spam or be rejected outright. It also leaves your domain vulnerable to spoofing — attackers can send email that looks like it's from you.