SPF Checker

Validate your domain's SPF (Sender Policy Framework) record to prevent email spoofing

What is SPF?

SPF (Sender Policy Framework) is an email authentication method that specifies which mail servers are authorized to send email on behalf of your domain.

When a receiving server gets an email claiming to be from your domain, it checks your SPF record to verify the sending server is authorized. This helps prevent spammers from forging your domain in email headers.

SPF Qualifiers:

  • +all: Allow all (not recommended)
  • ~all: Soft fail - accept but mark as suspicious
  • -all: Hard fail - reject (most secure)
  • ?all: Neutral - no policy