SPF Record Builder & Explainer

Build a valid SPF TXT record for Microsoft 365, Google Workspace and other senders, or paste an existing SPF record to have every mechanism explained and its DNS lookups counted.

Build

Microsoft 365 Google Workspace Allow this domain's MX hosts Extra IPv4/IPv6 (comma sep) Extra includes (comma sep) Policy

Explain an existing record

How to use it

Tick each service that sends mail as your domain and add any extra IPs or includes.
Pick a policy: start with ~all, move to -all once DMARC reports look clean.
Publish the output as a single TXT record at the domain root. Only one SPF record per domain is allowed, and it must stay within 10 DNS lookups.

Audit hundreds of domains at once

Need SPF, DMARC and MX checks across a whole client list? Run the Bulk SPF / DMARC / MX Auditor on Apify ($2 per 1,000 domains).

Want the full kit?

Runbooks, checklists and helpdesk templates: IT Admin Packs on Gumroad.