Email Security Analysis of amstructural.net
Complete verification of amstructural.net'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 a mx ip4:64.33.179.210 ip4:64.33.179.212 include:spf.securence.com ip4:50.212.161.126 include:_spfv6.comcast.net include:_spf.mdp.comcast.net -allDKIM
OKSelectors: defaultDMARC
Warningv=DMARC1; p=none; pct=100; rua=mailto:dmarc-reports@aileronit.net; sp=none; aspf=r;MX
OKsmtp1-msp.securence.com, smtp1-mke.securence.comRecommendations
1Change your DMARC policy from p=none to p=reject to block spoofing
With p=none, your DMARC record only monitors — it doesn't actually block spoofed emails. Attackers can still send emails as your domain and they'll be delivered normally. Switching to p=reject instructs receiving servers to drop fraudulent messages before they reach the inbox.
2Add 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 amstructural.net 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.