~/tools / spf-checker

SPF Checker

Check SPF record. Counts DNS lookups against the 10-lookup limit, flags `+all` security holes, and identifies common mistakes.

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[ OK ] Strict SPF (-all). Unauthorized senders are rejected.
── output ─────
v=spf1 include:_spf-a.microsoft.com include:_spf-b.microsoft.com include:_spf-c.microsoft.com include:_spf-ssg-a.msft.net include:_spf1-meo.microsoft.com -all
DNS lookups
5 / 10
All mechanism
-all
Includes (5)
_spf-a.microsoft.com, _spf-b.microsoft.com, _spf-c.microsoft.com, _spf-ssg-a.msft.net, _spf1-meo.microsoft.com
IP4 (0)
IP6 (0)
// Save microsoft.com → we'll run this daily and alert on changes. /signup →