khanacademy.org email security: SPF, DKIM & DMARC
Is khanacademy.org spoofable? See khanacademy.org'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.google.com include:sendgrid.net include:aspmx.sailthru.com include:mail.zendesk.com exists:%{i}._spf.mta.salesforce.com include:mg-spf.greenhouse.io -allDKIM
OKSelectors: google, k1, s1, s2DMARC
OKv=DMARC1; p=reject; rua=mailto:dmarc-reports@khanacademy.org; ruf=mailto:dmarc-reports@khanacademy.orgMX
OKaspmx.l.google.com, alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, aspmx2.googlemail.com, aspmx3.googlemail.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 khanacademy.org, run a live analysis.
Analyze khanacademy.org liveFrequently asked questions about khanacademy.org
Is khanacademy.org spoofable?
No. khanacademy.org is protected against email spoofing with a robust configuration. Email security score: 90/100 (grade A).
Does khanacademy.org have an SPF record?
Yes, khanacademy.org publishes an SPF record (-all qualifier).
What is khanacademy.org's DMARC record?
khanacademy.org publishes a DMARC record (_dmarc.khanacademy.org) with a p=reject policy.
Does khanacademy.org use DKIM?
Yes, DKIM signatures were detected for khanacademy.org.
Want to test another domain? Run a free email spoofing test.
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.