~/tools / spf-checker

SPF Checker

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

>
[ OK ] Strict SPF (-all). Unauthorized senders are rejected.
── output ─────
v=spf1 ip4:193.104.220.0/25 ip6:2001:67c:13c::/48 -all
DNS lookups
0 / 10
All mechanism
-all
Includes (0)
—
IP4 (1)
193.104.220.0/25
IP6 (1)
2001:67c:13c::/48
// Save taz.de → we'll run this daily and alert on changes. /signup →