coursera.org email security: SPF, DKIM & DMARC
Is coursera.org spoofable? See coursera.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:sendgrid.net ip4:24.6.102.21 ip4:50.16.53.44 include:_spf.google.com include:amazonses.com include:spf.mtasv.net include:_spf.salesforce.com -allDKIM
OKSelectors: google, s1, s2DMARC
OKv=DMARC1; p=reject; rua=mailto:dmarc-reports@coursera.org; ruf=mailto:dmarc-reports@coursera.org; fo=0; pct=100MX
OKaspmx.l.google.com, alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, aspmx4.googlemail.com, aspmx3.googlemail.com, aspmx2.googlemail.com, aspmx5.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
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Analyze coursera.org liveFrequently asked questions about coursera.org
Is coursera.org spoofable?
No. coursera.org is protected against email spoofing with a robust configuration. Email security score: 90/100 (grade A).
Does coursera.org have an SPF record?
Yes, coursera.org publishes an SPF record (-all qualifier).
What is coursera.org's DMARC record?
coursera.org publishes a DMARC record (_dmarc.coursera.org) with a p=reject policy.
Does coursera.org use DKIM?
Yes, DKIM signatures were detected for coursera.org.
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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.