ctzh.cn

Valid Email Server
Domain Lookup › ctzh.cn

Domain Overview

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

Checked via [email protected] · 2026-03-23 20:41:33 UTC · ↺ Refresh

MX Hostnames

  • mx.zmail300.cn
  • mx1.zmail300.cn

MX Priorities

  • mx1.zmail300.cn: 50
  • mx.zmail300.cn: 5

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 117.50.175.134 ↩ 51xgm.com
  • 101.237.133.34 ↩ outhb2.global-mail.cn

SOA Record

Raw SOA ns1.cnolnic.com root.cnolnic.net 2006112401 10800 3600 604800 86400
Primary NS (mname)
ns1.cnolnic.com
Admin Email (rname)
root@cnolnic.net
Serial
2006112401
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns2.cnolnic.com
ns1.cnolnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.zmail300.cn ~all
📊 DNS lookups: 1/10
~ 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

1 record
  • SPFv=spf1 include:spf.zmail300.cn ~all
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