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spf PROTOCOLHost: DNSimpleStandard: RFC 7208

How to Configure Sender Policy Framework (SPF) on DNSimple

Specifies which IP addresses and email service providers are authorized to send email on behalf of your domain. Follow this verified implementation guide to deploy standard compliant SPF DNS records in DNSimple.

Default SPF Record Syntax

// Authoritative RFC Example
v=spf1 include:_spf.example.com ~all

Configuration Steps in DNSimple

  1. 1Log in to the DNSimple Dashboard.
  2. 2Click your domain name under the "Domain List".
  3. 3Select "DNS" to view configured records.
  4. 4Click the trash can icon next to the affected CNAME.
  5. 5Confirm the immediate record purging.

Verification Checklist (RFC 7208)

Extract TXT records on the root domain looking for "v=spf1".
Verify that there is strictly ONE SPF record (multiple records cause PermError).
Count total DNS lookups (RFC 7208 strictly limits recursive DNS evaluations to 10).
Ensure the record ends with "~all" (SoftFail) or "-all" (HardFail).
Live Validation Engine

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