chu.edu.cn

Valid Email Server
Domain Lookup › chu.edu.cn

Domain Overview

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

Checked via [email protected] · 2026-03-17 22:39:57 UTC · ↺ Refresh

MX Hostnames

  • mxbiz2.qq.com

MX Priorities

  • mxbiz2.qq.com: 10

A / AAAA Records

  • 220.180.246.44 (no PTR)
  • 2001:da8:d816:8888::9 (no PTR)

Mail Server IPs

  • 43.154.252.16 (no PTR)
  • 43.154.252.202 (no PTR)

SOA Record

Raw SOA dns1.chu.edu.cn service\@chu.edu.cn 2021122882 300 600 7200 3600
Primary NS (mname)
dns1.chu.edu.cn
Admin Email (rname)
service\@chu@edu.cn
Serial
2021122882
Refresh
300s
Retry
600s
Expire
7200s
Minimum TTL
3600s

Nameservers (NS)

dns2.chu.edu.cn
dns1.chu.edu.cn

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.mail.qq.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; 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.mail.qq.com ~all
Full email verification for chu.edu.cn

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits