matmut.fr email security: SPF, DKIM & DMARC
Is matmut.fr spoofable? See matmut.fr'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 mx ip4:217.109.73.224/27 ip4:217.108.5.192/28 ip4:78.155.158.32/27 ip4:84.55.172.224/28 ip4:213.245.2.0/25 ip4:46.235.17.250 ip4:46.235.17.251 include:spf.mandrillapp.com -allDKIM
OKSelectors: default, mandrillDMARC
OKv=DMARC1; p=reject; rua=mailto:matmut.rua@emailsecurity.merox.ioMX
OKmail1.matmut.fr, mail2.matmut.frRecommendations
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 matmut.fr liveFrequently asked questions about matmut.fr
Is matmut.fr spoofable?
No. matmut.fr is protected against email spoofing with a robust configuration. Email security score: 90/100 (grade A).
Does matmut.fr have an SPF record?
Yes, matmut.fr publishes an SPF record (-all qualifier).
What is matmut.fr's DMARC record?
matmut.fr publishes a DMARC record (_dmarc.matmut.fr) with a p=reject policy.
Does matmut.fr use DKIM?
Yes, DKIM signatures were detected for matmut.fr.
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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.