Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cuc.edu.cn
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 17:54:07 UTC · ↺ Refresh
MX Hostnames
- hzmx01.mxmail.netease.com
- hzmx02.mxmail.netease.com
MX Priorities
- hzmx02.mxmail.netease.com: 10
- hzmx01.mxmail.netease.com: 5
A / AAAA Records
- 202.205.16.1 (no PTR)
Mail Server IPs
- 47.253.119.154 (no PTR)
- 47.90.150.166 (no PTR)
SOA Record
Raw SOA
ns.cuc.edu.cn admin.example.com 2100004791 10800 900 604800 86400
Primary NS (mname)
ns.cuc.edu.cn
Admin Email (rname)
admin@example.com
Serial
2100004791
Refresh
10800s
Retry
900s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
bdns3.cuc.edu.cn
pdns3.cuc.edu.cn
SPF Record
✓ Strict (-all)
v=spf1 include:wm.spf.ntesmail.com include:spf.qiye.163.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; ruf=mailto:[email protected]; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:wm.spf.ntesmail.com include:spf.qiye.163.com -all
- adobe-idp-site-verification=9a8a9bc2fe0d63ec46fa228a9dc887e13166e7760364b10592f8a0e6dd8bdf90
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