Email Security Analysis of techone.nl
Complete verification of techone.nl's SPF, DKIM, DMARC, and MTA-STS records. Find out if this domain is protected against email spoofing.
Last updated: April 15, 2026
SPF
OKv=spf1 a include:_spf.exactonline.nl include:spf.protagonist.nl include:spf.protection.outlook.com include:emsd1.com include:_spf.netwerkplan.nl include:mail.zendesk.com ip4:88.99.27.29 ip4:217.18.70.28 ip4:136.243.24.16 ~allDKIM
OKSelectors: selector1, selector2, s1, s2DMARC
OKv=DMARC1; p=reject; sp=reject; rua=mailto:postmaster@techone.nl; ruf=mailto:postmaster@techone.nl; adkim=r; aspf=r;MX
OKtechone-nl.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.
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Analyze techone.nl liveGuides to understand these results
SPF Guide
Understand how SPF defines which servers are authorized to send emails for a domain.
DKIM Guide
Discover how DKIM cryptographically signs your emails to guarantee their authenticity.
DMARC Guide
Learn how DMARC orchestrates SPF and DKIM to protect your domain.
MTA-STS Guide
Learn how MTA-STS enforces TLS encryption to protect your emails in transit.
SPF vs DKIM vs DMARC
Compare the three protocols and understand how they work together.