sdjtu.edu.cn

Email infrastructure report · Last checked 28 Jul 2026, 18:00 UTC

Summary

sdjtu.edu.cn uses Self-hosted / Custom for email and has SPF configured. It is a catch-all domain.

Mail provider

ProviderSelf-hosted / Custom self-hosted

Primary MXmx-sdjtu-edu-cn.icoremail.net

MX records

Priority	Hostname	IPs
1	mx-sdjtu-edu-cn.icoremail.net	152.32.234.63, 152.32.185.215
10	mail.sdjtu.edu.cn	211.64.127.182

Authentication

SPF✓ Present -all

DKIM? Not detected via common selectors

DMARC✗ Missing

Raw SPF record

v=spf1 ip4:211.64.127.182 ip4:112.38.217.31  ip4:111.17.194.118 include:spf.icoremail.net -all

Email behavior

Catch-all✓ Yes

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response474ms

SMTP banner220 ucloud-cmmxproxy-6 Anti-spam GT for Coremail System (OP_MXPROXY[20250310])

What this means

This domain is missing 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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