tsinghua.org.cn

Valid Email Server
Domain Lookup › tsinghua.org.cn
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
tsinghua.org.cn
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-27 20:02:59 UTC · ↺ Refresh

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MX Hostnames

  • hzmx01.mxmail.netease.com
  • hzmx02.mxmail.netease.com

MX Priorities

  • hzmx01.mxmail.netease.com: 5
  • hzmx02.mxmail.netease.com: 10

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 47.253.119.154 (no PTR)
  • 47.90.150.166 (no PTR)

SOA Record

Raw SOA dns.tsinghua.org.cn root.localhost 2017011158 60 60 86400 21600
Primary NS (mname)
dns.tsinghua.org.cn
Admin Email (rname)
root@localhost
Serial
2017011158
Refresh
60s
Retry
60s
Expire
86400s
Minimum TTL
21600s

Nameservers (NS)

dns.cic.tsinghua.edu.cn
dns2.cic.tsinghua.edu.cn

SPF Record

✓ Strict (-all)
v=spf1 include:spf.163.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 include:spf.163.com -all
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