csii.com.cn

Valid Email Server
Domain Lookup › csii.com.cn

Domain Overview

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

Checked via [email protected] · 2026-03-14 01:58:01 UTC · ↺ Refresh

MX Hostnames

  • mx01.263xmail.com

MX Priorities

  • mx01.263xmail.com: 10

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 38.83.106.85 ↩ us-mx2.263.net
  • 143.110.227.31 (no PTR)
  • 164.92.126.242 (no PTR)
  • 38.83.106.84 ↩ us-mx1.263.net

SOA Record

Raw SOA ns1.sfn.cn root.ns1.sfn.cn 2026031321 600 120 604800 7200
Primary NS (mname)
ns1.sfn.cn
Admin Email (rname)
root@ns1.sfn.cn
Serial
2026031321
Refresh
600s
Retry
120s
Expire
604800s
Minimum TTL
7200s

Nameservers (NS)

ns1.sfn.cn
ns2.sfn.cn

SPF Record

✓ Soft Fail (~all)
v=spf1include:spf.263xmail.com~all
📊 DNS lookups: 0/10
~ Soft fail (~all) — moderate enforcement

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

2 records
  • MS=69AFAD9A25201EC16EB4D5CA009105B445079AF4
  • SPFv=spf1include:spf.263xmail.com~all
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