Secure Networks MailCHK - email authentication checker

Is your domain protected against email spoofing?

Send one real test email and get back a plain-English report on your SPF, DKIM and DMARC setup - checked against what a receiving mail server actually sees, not just a DNS lookup.

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SPF

Which mail servers are allowed to send for your domain.

DKIM

A cryptographic signature proving a message wasn't altered in transit.

DMARC

The policy tying SPF and DKIM together, and what happens on failure.