Email Security Checker
Check any domain's SPF, DKIM, DMARC, MTA-STS and BIMI records in seconds — see exactly what's stopping attackers from sending email that looks like it's from you.
Looking up DNS records for this domain…
Want these gaps fixed, not just found?
Decoding IT's managed email security service configures SPF, DKIM and DMARC correctly, monitors reports, and keeps your domain protected against spoofing and phishing.