sina.com

Valid Email Server
Domain Lookup › sina.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sina.com
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No

Checked via [email protected] · 2026-03-22 23:19:09 UTC · ↺ Refresh

MX Hostnames

  • freemx1.sinamail.sina.com.cn
  • freemx2.sinamail.sina.com.cn
  • freemx3.sinamail.sina.com.cn

MX Priorities

  • freemx1.sinamail.sina.com.cn: 10
  • freemx2.sinamail.sina.com.cn: 10
  • freemx3.sinamail.sina.com.cn: 10

A / AAAA Records

  • 64.71.151.11 (no PTR)

Mail Server IPs

  • 36.51.224.198 (no PTR)

SOA Record

Raw SOA ns1.sina.com.cn zhihao.staff.sina.com.cn 2005042601 900 300 604800 300
Primary NS (mname)
ns1.sina.com.cn
Admin Email (rname)
zhihao@staff.sina.com.cn
Serial
2005042601
Refresh
900s
Retry
300s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns4.sina.com.cn
ns3.sina.com.cn
ns1.sina.com
ns1.sina.com.cn
ns4.sina.com
ns2.sina.com
ns2.sina.com.cn
ns3.sina.com

SPF Record

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

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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.sinamail.sina.com.cn -all
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