justsci.cn

Valid Email Server
Domain Lookup › justsci.cn

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
justsci.cn
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-14 04:16:20 UTC · ↺ Refresh

MX Hostnames

  • mx1.qiye.aliyun.com
  • mx3.qiye.aliyun.com
  • mx2.qiye.aliyun.com

MX Priorities

  • mx1.qiye.aliyun.com: 5
  • mx3.qiye.aliyun.com: 15
  • mx2.qiye.aliyun.com: 10

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 47.246.137.47 (no PTR)
  • 47.246.136.231 ↩ cz-clare.com

SOA Record

Raw SOA ns1.alidns.com hostmaster.hichina.com 2026010913 3600 1200 86400 600
Primary NS (mname)
ns1.alidns.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026010913
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s

Nameservers (NS)

ns1.alidns.com
ns2.alidns.com

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

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

No TXT records found.

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