Email Security Analysis of arcturusrx.com
Complete verification of arcturusrx.com's SPF, DKIM, DMARC, and MTA-STS records. Find out if this domain is protected against email spoofing.
Last updated: April 15, 2026
SPF
OKv=spf1 mx include:us._netblocks.mimecast.com include:mailgun.org include:everbridge.net include:spf.protection.outlook.com ip4:23.21.109.197 ip4:23.21.109.212 ip4:34.199.159.209 ip4:34.197.134.60 ip4:147.160.167.14 ip4:147.160.167.15 ip4:52.49.235.189 ip4:52.49.201.246 ip4:34.251.106.174 -allDKIM
OKSelectors: selector1, k1DMARC
OKv=DMARC1; p=reject; rua=mailto:7fcfdd7573574e228a7a56992e199c50@dmarc-reports.cloudflare.net; fo=1;MX
OKus-smtp-inbound-1.mimecast.com, us-smtp-inbound-2.mimecast.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.
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Analyze arcturusrx.com liveGuides 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.