SPF / DKIM / DMARC Builder
Shortcut ⌘↵Build and validate email authentication DNS records with lookup budgets and issue flags.
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Record
v=spf1 include:_spf.google.com include:mailgun.org ip4:203.0.113.10 mx ~all
DNS lookups
3
Length
75 chars
Terms
5
| Term | Result | Lookups | Explanation |
|---|---|---|---|
| include:_spf.google.com | Pass | 1 | Also trust whatever _spf.google.com lists in its own SPF record. A match here ends evaluation with Pass. Costs 1 DNS lookup, plus every lookup inside that record. |
| include:mailgun.org | Pass | 1 | Also trust whatever mailgun.org lists in its own SPF record. A match here ends evaluation with Pass. Costs 1 DNS lookup, plus every lookup inside that record. |
| ip4:203.0.113.10 | Pass | 0 | Pass for senders inside 203.0.113.10. No DNS lookup needed — the cheapest kind of mechanism. |
| mx | Pass | 1 | Pass for the hosts listed in the MX records of this domain. Costs 1 DNS lookup for the MX set plus one per host returned. |
| ~all | SoftFail | 0 | Everything not matched above soft-fails: usually accepted but marked suspicious. Good while rolling out. |