Dependency Chains
DMARC Authentication Chain (SPF)
DMARC uses SPF to verify that emails come from authorized servers
SPF Record
SPF record found and configured
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DMARC Policy
DMARC policy: reject
DMARC Authentication Chain (DKIM)
DMARC uses DKIM to verify that emails have not been tampered with
DKIM Signature
DKIM signature configured
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DMARC Policy
DMARC policy: reject
Mail Server Identity: custmx.cscdns.net
PTR record proves mail server legitimacy
MX: custmx.cscdns.net
Mail server at 198.58.121.58
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PTR Record
Reverse DNS: 198-58-121-58.ip.linodeusercontent.com
Mail Server Reputation: custmx.cscdns.net
RBL check ensures server is not blacklisted
MX: custmx.cscdns.net
Mail server at 198.58.121.58
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RBL Status
Not blacklisted
Enforced Encryption Chain
MTA-STS enforces TLS encryption to prevent man-in-the-middle attacks
TLS Support
TLS not verified or unsupported
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MTA-STS Policy
MTA-STS not configured
โ ๏ธ TLS support could not be verified. MTA-STS requires TLS to enforce encrypted connections. Without TLS, MTA-STS cannot function.
Brand Identity Chain
BIMI displays your logo in email clients, but requires DMARC enforcement
DMARC Enforcement
DMARC policy: reject
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BIMI Record
BIMI not configured
โ ๏ธ BIMI record is missing. Even with DMARC enforcement, you need to configure BIMI to display your brand logo in supported email clients.
TLS Monitoring Chain
TLS-RPT provides reports about TLS connection failures
TLS Support
TLS not verified or unsupported
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TLS-RPT Reporting
TLS failure reporting configured
โ ๏ธ TLS support could not be verified. TLS-RPT reports on TLS connection failures, but without TLS support, there's nothing to monitor. You need working TLS encryption before TLS-RPT can provide value.