Live email authentication test

A DNS check tells you what your records claim. This tells you what your mail server actually does — because you send us a real message and we report what arrived. It finds the DKIM selector you really sign with (which no scan can enumerate), the verdicts a receiver reaches on your message, and the reverse DNS on the IP you send from.

Live send test

Test your real email setup in about a minute

Static checks read your DNS records. This one reads an actual message from your mail server: the selector it really signs with, the verdicts a receiver reaches, and the reverse DNS on the IP it connects from.