Results for gchq.gov.uk
Analysis performed on April 15, 2026 at 03:13 PM
90A
This domain is protected against spoofing
SPF
OKv=spf1 include:spf.protection.outlook.com -allDKIM
OKSelectors: selector2DMARC
OKv=DMARC1;p=reject;adkim=s;aspf=s;rua=mailto:dmarc-rua@dmarc.service.gov.uk;MX
OKgchq-gov-uk.mail.protection.outlook.comRecommendations
1Add MTA-STS to enforce TLS encryption for incoming emails
Without MTA-STS, an attacker performing a man-in-the-middle attack can downgrade the connection between mail servers to plaintext, intercepting emails in transit. MTA-STS tells sending servers to only deliver via TLS with a valid certificate, preventing downgrade attacks.
Badge for your website
Display your email security score on your website.
<a href="https://spoofchecker.online/en/email-security/gchq.gov.uk" target="_blank" rel="noopener"><img src="https://spoofchecker.online/api/badge/gchq.gov.uk?score=90&grade=A" alt="Email security score for gchq.gov.uk" height="28"></a>