SPF record builder

Assemble a v=spf1 TXT record from checkboxes and lists — and stay under the 10-lookup limit.

Senders a — The domain's A/AAAA record mx — The domain's MX hostsIPv4 addresses / CIDR (one per line, up to 10)IPv6 addresses / CIDR (one per line, up to 10)include: domains (one per line, up to 10)

redirect= domain (optional — replaces the all mechanism)all qualifier (catch-all policy)

Built in this browser. Nothing is sent anywhere.

Common mechanisms only (a, mx, ip4, ip6, include, redirect, all). The 10-lookup cap is counted locally — your DNS provider still has to resolve it.

How to use

Check which senders apply (a, mx, ip4/ip6, include).
Set the all qualifier or a redirect.
Copy the record into your DNS.

What it supports

Mechanisms a, mx, ip4, ip6, include, redirect, and the all qualifier; up to 10 entries per list and a 450-character record cap. The lookup count is estimated locally — your DNS provider performs the real lookups.

Related tools

DMARC record builder
Email header analyzer
Email signature builder

Related guides

Write an SPF record for your domain
Write a DMARC record that reports before it rejects