usmart.hk

Valid Email Server
Domain Lookup › usmart.hk
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
usmart.hk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-07-27 20:56:32 UTC · ↺ Refresh

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MX Hostnames

  • mxbiz2.qq.com
  • mxbiz1.qq.com

MX Priorities

  • mxbiz2.qq.com: 10
  • mxbiz1.qq.com: 5

A / AAAA Records

  • 119.28.205.187 (no PTR)

Mail Server IPs

  • 43.154.252.16 (no PTR)
  • 43.154.252.202 (no PTR)
  • 103.86.78.2 (no PTR)
  • 103.86.78.3 (no PTR)

SOA Record

Raw SOA ns-872.awsdns-45.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-872.awsdns-45.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1295.awsdns-33.org
ns-1665.awsdns-16.co.uk
ns-53.awsdns-06.com
ns-872.awsdns-45.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.mail.qq.com ~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

2 records
  • SPFv=spf1 include:spf.mail.qq.com ~all
  • google-site-verification=lln5T6zvzf_rpeywiQ_Cuu_M2S_xkexXvcKIc8TIztk
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