sie.edu.cn

Email infrastructure report · Last checked 30 Jul 2026, 01:44 UTC

Summary

sie.edu.cn uses Self-hosted / Custom for email and has no email authentication configured. It is a catch-all domain.

Mail provider

ProviderSelf-hosted / Custom self-hosted

Primary MXmx1.icoremail.net

MX records

Priority	Hostname	IPs
10	mx1.icoremail.net	139.162.158.182, 89.168.97.82, 165.154.163.126, 128.1.132.100

Authentication

SPF✗ Missing

DKIM? Not detected via common selectors

DMARC✗ Missing

Email behavior

Catch-all✓ Yes

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response69ms

SMTP banner220 fralinode-mxproxy-1.icoremail.net Anti-spam GT for Coremail System (OP_MXPROXY[20250310])

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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