kayak.com email security: SPF, DKIM & DMARC
Is kayak.com spoofable? See kayak.com's SPF, DKIM, DMARC and MTA-STS records and find out if this domain is protected against email spoofing.
Last updated: June 3, 2026
SPF
OKv=spf1 include:_spf.psm.knowbe4.com include:mail.zendesk.com include:_spf.presscloud.com include:helpscoutemail.com include:kayak.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~allDKIM
OKSelectors: google, k1, mandrill, s1, s2, zendesk1, zendesk2DMARC
OKv=DMARC1; p=reject; pct=100; adkim=r; aspf=r; rua=mailto:dmarc_agg@vali.emailMX
OKmxb-009e5101.gslb.pphosted.com, mxa-009e5101.gslb.pphosted.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.
Run a live analysis
The results above are updated daily. For an instant check of kayak.com, run a live analysis.
Analyze kayak.com liveFrequently asked questions about kayak.com
Is kayak.com spoofable?
No. kayak.com is protected against email spoofing with a robust configuration. Email security score: 90/100 (grade A).
Does kayak.com have an SPF record?
Yes, kayak.com publishes an SPF record (~all qualifier).
What is kayak.com's DMARC record?
kayak.com publishes a DMARC record (_dmarc.kayak.com) with a p=reject policy.
Does kayak.com use DKIM?
Yes, DKIM signatures were detected for kayak.com.
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Guides 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.