ctg.com.cn

Valid Email Server
Domain Lookup › ctg.com.cn

Domain Overview

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

Checked via [email protected] · 2026-03-14 01:58:12 UTC · ↺ Refresh

MX Hostnames

  • mx1.mi.139.com

MX Priorities

  • mx1.mi.139.com: 20

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 36.139.11.141 (no PTR)

SOA Record

Raw SOA ns3.dnsv4.com enterprise2dnsadmin.dnspod.com 1770112975 3600 180 1209600 180
Primary NS (mname)
ns3.dnsv4.com
Admin Email (rname)
enterprise2dnsadmin@dnspod.com
Serial
1770112975
Refresh
3600s
Retry
180s
Expire
1209600s
Minimum TTL
180s

Nameservers (NS)

ns4.dnsv4.com
ns3.dnsv4.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.mi.139.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;fo=1;ruf=mailto:[email protected];rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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.mi.139.com ~all
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