imnu.edu.cn

Valid Email Server
Domain Lookup › imnu.edu.cn

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
imnu.edu.cn
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-04 19:22:19 UTC · ↺ Refresh

MX Hostnames

  • xchzmx01.mxmail.netease.com

MX Priorities

  • xchzmx01.mxmail.netease.com: 5

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 47.89.188.63 (no PTR)
  • 47.253.12.6 (no PTR)

SOA Record

Raw SOA master.imnu.edu.cn mailmaster.imnu.edu.cn 2100000654 10800 3600 604800 43200
Primary NS (mname)
master.imnu.edu.cn
Admin Email (rname)
mailmaster@imnu.edu.cn
Serial
2100000654
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
43200s

Nameservers (NS)

sddns.imnu.edu.cn
nmsd2.imnu.edu.cn
nmsd1.imnu.edu.cn

SPF Record

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

DMARC Record

✗ p=none
v=DMARC1; p=none; fo=1; ruf=mailto:[email protected]; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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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