xxmu.edu.cn

Email infrastructure report · Last checked 28 Jul 2026, 19:21 UTC

Summary

xxmu.edu.cn uses Tencent QQ Mail for email and has SPF and DMARC configured. It is a catch-all domain.

Mail provider

ProviderTencent QQ Mail free

Primary MXmxbiz1.qq.com

MX records

Priority	Hostname	IPs
5	mxbiz1.qq.com	103.86.78.3, 103.86.78.2
10	mxbiz2.qq.com	43.154.252.202, 43.154.252.16

Authentication

SPF✓ Present ~all

DKIM? Not detected via common selectors

DMARC✓ Present p=none

Raw SPF record

v=spf1 include:spf.mail.qq.com ~all

Raw DMARC record

v=DMARC1; p=none; rua=mailto:mailauth-reports@qq.com

Email behavior

Catch-all✓ Yes

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response654ms

SMTP banner220 bizmx60.qq.com MX QQ Mail Server

What this means

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

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