sumup.com email security: SPF, DKIM & DMARC
Is sumup.com spoofable? See sumup.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 ip4:52.211.74.234 ip4:52.214.148.172 include:_spf.google.com include:_spf.salesforce.com include:sendgrid.net include:amazonses.com include:_spf.iriscrm.com -allDKIM
OKSelectors: google, mandrill, s1, s2DMARC
OKv=DMARC1; p=reject; pct=100; rua=mailto:dmarc@sumup.com; ruf=mailto:dmarc@sumup.comMX
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
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Analyze sumup.com liveFrequently asked questions about sumup.com
Is sumup.com spoofable?
No. sumup.com is protected against email spoofing with a robust configuration. Email security score: 90/100 (grade A).
Does sumup.com have an SPF record?
Yes, sumup.com publishes an SPF record (-all qualifier).
What is sumup.com's DMARC record?
sumup.com publishes a DMARC record (_dmarc.sumup.com) with a p=reject policy.
Does sumup.com use DKIM?
Yes, DKIM signatures were detected for sumup.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.