Free SPF record generator

Free SPF record generator for safer sender setup

Use this free SPF record generator to build a Sender Policy Framework TXT record for your domain. Add include domains, sender IPs, and enforcement policy, then review the generated SPF value and estimated lookup count before publishing DNS.

Generate a free SPF record

Build a DNS-ready SPF policy

Enter the domain, sender sources, and policy mode. The generator returns the TXT record value plus a lookup estimate so you can judge whether the record is safe to publish.

Best fit

Use this when sender inventory changes

This page is strongest when a team is consolidating senders, onboarding a new ESP, or replacing a hand-written SPF record that has become hard to trust.

Rebuild sender policy after ESP or infrastructure changes
Reduce accidental include-chain sprawl
Document why MX, A, IPs, or includes are in the policy

Upgrade path

Generated records still need validation and monitoring

A generator helps you draft a cleaner SPF record. Production confidence comes from validating the live record and tracking auth posture over time.

Validate the live record after publishing
Re-check after propagation and real sends
Keep the auth stack visible as providers change

Open SPF checker

Key details

Primary use

SPF setup

Build a sender policy that is easier to review before publishing production DNS changes.

Guardrail

Lookup estimate

See how close the generated policy may be to SPF recursion limits before rollout.

Output

DNS-ready TXT

Get a record name, type, TTL, and generated value ready for your DNS provider.

Workflow

Generate then validate

Pair generation with SPF lookup, propagation checks, and real-header verification.

What this generator does

A useful SPF generator balances correctness with maintainability

The goal is not only to produce a syntactically valid policy. It is to make sure the domain authorizes the right senders without drifting into unreviewable complexity.

Includes

Provider support

Add upstream include domains when a sending platform manages part of the policy for you.

IPs

Direct senders

Specify direct IPv4 or IPv6 sources when mail originates from infrastructure you control.

MX / A

Optional mechanisms

Choose whether the domain should authorize its own MX or A records as senders.

Policy

Rollout mode

Select softfail, fail, or neutral based on how confident you are in sender inventory coverage.

Operational use

Best used before DNS rollout, not after a deliverability incident

Treat SPF generation as part of sender change review. Generate a clean policy, publish it, then validate the live result and inspect real headers.

Migration planning

Rebuild the SPF policy before cutover so old providers and new senders are not mixed into a confusing transition record.

Sender cleanup

Use generation as a forcing function to remove deprecated sender paths and reduce policy bloat.

Release control

Keep a record of the generated policy and why it changed so DNS updates are easier to review and roll back safely.

Related tools

SPF checker

Validate the published SPF record after rollout and confirm the live policy matches what you generated.

Open tool

DNS propagation checker

Confirm the new TXT value has propagated before relying on it in production.

Open tool

Email header analyzer

Inspect real message headers to confirm the published SPF policy produces the verdict you expect.

Open tool

DKIM checker

Review DKIM alongside SPF so sender auth is validated as a full stack.

Open tool

FAQ

What does this SPF record generator produce?

This SPF record generator builds a TXT record for the domain, includes the sender sources you specify, applies the chosen enforcement policy, and estimates DNS lookup complexity so rollout risk is easier to judge.

When should I use softfail versus fail?

Use softfail while inventory is still being validated or while a migration is in progress. Move to fail when you are confident every legitimate sender is covered and you want stricter enforcement.

Why does lookup count matter in a generated SPF record?

Nested includes can push a policy toward the SPF evaluation limit. A generator is more useful when it helps you keep the record maintainable, not just syntactically valid.

What should I do after generating an SPF record?

Publish the TXT value in DNS, wait for propagation, run an SPF checker, and confirm real messages show the expected SPF verdict in message headers.