SPF Domain Record Validator

Decode SPF syntax layouts, check domain authorizations, and monitor the critical 10-lookup limit threshold.

SPF Record Workspace

Validate Domain SPF

Enter your outreach domain to check syntax parameters and lookups count

SPF Check: Valid
DNS Lookups: -
🌐 Target Domain
  • Domain Checked: -
🛡️ DNS Diagnostics
  • Has SPF Record: -
  • Syntax Validity: -
  • Lookups Count: -

Validate Sender Policy Framework Settings

Why deliverability professionals and marketing operations teams check SPF records

Syntax Validation

Decodes and validates SPF records syntax layouts to ensure standard configuration rules are followed.

DNS Lookups Counter

Monitors the strict RFC-defined 10-lookup limit to prevent authentication resolution failure errors.

Mechanisms Audits

Extracts and displays active mechanisms (include, ip4, mx) to verify authorised sender relays.

Follow these simple steps to check your domains settings

Provide Target Domain

Enter the domain name (e.g. google.com or bitspro.tech) to check for SPF records.

Retrieve Records

Click "Verify SPF Records" to fetch active records directly from DNS servers.

Check Lookups Size

Audit the total DNS lookups count to confirm it stays within the secure 10-lookup limit.

Solve Warnings

Address syntax alerts, redundant include chains, or missing all mechanisms flags.

Frequently Asked Questions

Answers to common inquiries about SPF records lookup limits and layouts audit

What is an SPF record?
Sender Policy Framework (SPF) is a DNS text record that lists all authorized servers permitted to send email on behalf of your domain. It prevents email spoofing and improves sender reputation.
What is the SPF 10-lookup limit?
According to RFC specifications, resolving an SPF record must not require more than 10 nested DNS queries (including mechanisms like "include", "mx", or "a"). Exceeding this limit leads to SPF PermError flags.
What do ~all and -all mean?
The "~all" mechanism denotes a SoftFail (emails from unauthorized relays are accepted but flagged), while "-all" denotes a HardFail (unauthorized emails should be rejected). "~all" is recommended when transitioning or using DMARC.