polymarket.com email security: SPF, DKIM & DMARC
Is polymarket.com spoofable? See polymarket.com's SPF, DKIM, DMARC and MTA-STS records and find out if this domain is protected against email spoofing.
Last updated: November 10, 2026
SPF
OKv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~allDKIM
OKSelectors: google, mandrillDMARC
OKv=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.emailMX
OKaspmx.l.google.com, alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.comMTA-STS
OKv=STSv1; id=20230615T153000;Keep an eye on your domain
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<a href="https://spoofchecker.online/en/email-security/polymarket.com" target="_blank" rel="noopener"><img src="https://spoofchecker.online/api/badge/polymarket.com?score=100&grade=A" alt="Email security score for polymarket.com" height="28"></a>Frequently asked questions about polymarket.com
Is polymarket.com spoofable?
No. polymarket.com is protected against email spoofing with a robust configuration. Email security score: 100/100 (grade A).
Does polymarket.com have an SPF record?
Yes, polymarket.com publishes an SPF record (~all qualifier).
What is polymarket.com's DMARC record?
polymarket.com publishes a DMARC record (_dmarc.polymarket.com) with a p=reject policy.
Does polymarket.com use DKIM?
Yes, DKIM signatures were detected for polymarket.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.