What is an SPF Record?
An SPF record is a DNS entry that specifies which mail servers are authorized to send email on behalf of your domain, preventing spoofing and improving deliverability.
SPF Record Definition
SPF stands for Sender Policy Framework. An SPF record is a TXT record published in your domain's DNS that lists the IP addresses and hostnames authorized to send email for that domain. When a receiving mail server gets an email claiming to be from your domain, it checks your SPF record to verify the sending server is on the approved list. If the server is not listed, the email can be flagged as suspicious, routed to spam, or rejected entirely.
An SPF record uses a specific syntax that includes mechanisms like "ip4" for IPv4 addresses, "include" to reference another domain's SPF record (commonly used when sending through third-party services like Google Workspace or Mailchimp), and qualifiers like "+all" (pass), "-all" (hard fail), or "~all" (soft fail) to define the default action for unlisted senders. A properly configured SPF record is the foundation of email authentication.
Without an SPF record, anyone can send email that appears to come from your domain. This makes your domain vulnerable to spoofing and phishing attacks, and receiving servers have no way to verify the legitimacy of messages claiming to originate from you. As a result, many ISPs will penalize or reject emails from domains without SPF records, significantly hurting your deliverability.
How SPF Records Relate to Email Verification
SPF records play a role in email verification because our service checks domain authentication as part of the verification process. When you verify an email address with Email Verifier by EcomTech, we examine the domain's DNS configuration including MX records and SPF records to assess domain health and deliverability potential. Domains with proper SPF configuration are more likely to have legitimate, well-maintained mailboxes.
You can check your domain's SPF record — along with DKIM and DMARC — using our free authentication checker tool. Proper email authentication protects your domain reputation and ensures your verified, clean email lists achieve maximum inbox placement.
Check your SPF record now. Use our free SPF, DKIM & DMARC checker to verify your email authentication setup.
Check SPF RecordSPF Record FAQ
SPF stands for Sender Policy Framework. It is a DNS-based email authentication protocol that allows domain owners to specify which mail servers are authorized to send email on behalf of their domain. Receiving servers check the SPF record to verify the sender is legitimate.
You can check your domain's SPF record using our free SPF, DKIM & DMARC Checker. Simply enter your domain name and the tool will look up your DNS records and show your SPF configuration along with any issues or recommendations.
Without an SPF record, receiving mail servers cannot verify that emails claiming to come from your domain are actually sent by authorized servers. This makes your domain vulnerable to spoofing and phishing attacks, and many ISPs will flag or reject emails from domains without SPF records, hurting your deliverability.
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Learn more: what is email verification · best practices · how it works