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cn-es.com

Email infrastructure report · Last checked

Summary

cn-es.com uses Self-hosted / Custom for email and has no email authentication configured. It is not catch-all.

Mail provider

ProviderSelf-hosted / Custom self-hosted
Primary MXmx1.feishu.cn

MX records

PriorityHostnameIPs
1mx1.feishu.cn52.220.106.220
5mx2.feishu.cn101.126.58.225, 122.14.229.0
10mx3.feishu.cn52.220.106.220, 101.126.58.225, 122.14.229.0

Authentication

SPF✗ Missing
DKIM? Not detected via common selectors
DMARC✗ Missing

Email behavior

Catch-all✗ No
Disposable✗ No
Free provider✗ No
STARTTLS✓ Supported
SMTP response496ms
SMTP banner220 n126-057-150 ESMTP ready

What this means

This domain is missing SPF, DKIM, DMARC, which weakens its protection against email spoofing. Adding these records would improve deliverability and reduce the risk of impersonation.

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