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  3. SPF record generator
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SPF record generator

Assemble a v=spf1 TXT record from guided mechanism rows (a, mx, ip4, ip6, include, exists, redirect) with a plain-language explanation per row and a chosen catch-all qualifier, then show the assembled record with copy.

This tool is in beta

Still being tested. If a result looks wrong, tell us.

Report a problem

Add a mechanism to build the record.

This generator assembles text only; it never reads DNS, so a row can name a domain that publishes no SPF record and the record still builds. Count the lookups against the limit of 10 before publishing, paste the result as one TXT record on the sending domain's own name, and check the live record afterwards. Include and redirect target domains must publish their own SPF records for the mechanisms to ever match.

Mechanisms

Row 1

Mechanism
Qualifier
domain, domain/prefix, or empty for this domain
Catch-allWhat happens to senders no mechanism matches

Up to 30 rows. Values are capped at 253 characters, the length of a DNS name. Everything assembles as you type; nothing is sent anywhere.

More network tools

  • DNS explainer
  • Live DNS lookup
  • RDAP lookup
All network tools

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