~/tools / spf-checker

SPF Checker

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

>
[ WARNING ] Soft fail (~all). Unauthorized senders flagged but not rejected. Consider -all for stronger protection.
── output ─────
v=spf1 include:_spf.google.com include:mail.zendesk.com include:sendgrid.net ~all
DNS lookups
3 / 10
All mechanism
~all
Includes (3)
_spf.google.com, mail.zendesk.com, sendgrid.net
IP4 (0)
IP6 (0)
// Save shopify.com → we'll run this daily and alert on changes. /signup →