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spf PROTOCOLHost: Vercel DNSStandard: RFC 7208

How to Configure Sender Policy Framework (SPF) on Vercel DNS

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 Vercel DNS.

Default SPF Record Syntax

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

Configuration Steps in Vercel DNS

  1. 1Open the Vercel Dashboard and navigate to the Team Settings or Project Settings.
  2. 2Go to "Domains" and select your root domain.
  3. 3Scroll to the DNS Records table.
  4. 4Find the CNAME record for the subdomain.
  5. 5Click the three dots menu (...) and select "Delete".

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).
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