istorage.com.hk

Valid Email Server
Domain Lookup › istorage.com.hk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
istorage.com.hk
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 07:25:07 UTC · ↺ Refresh

MX Hostnames

  • d329746a.ess.barracudanetworks.com
  • d329746b.ess.barracudanetworks.com

MX Priorities

  • d329746b.ess.barracudanetworks.com: 99
  • d329746a.ess.barracudanetworks.com: 99

A / AAAA Records

  • 218.255.31.20 (no PTR)

Mail Server IPs

  • 209.222.82.255 ↩ mail.ess.barracuda.com
  • 209.222.82.253 ↩ mail.ess.barracuda.com
  • 209.222.82.252 ↩ mail.ess.barracuda.com

SOA Record

Raw SOA ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:mailgun.org include:spf.ess.barracudanetworks.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict 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
  • mscid=n0uyfahKkTcWR4PKp09O2JSw9FHC/hb2SwPnvn0WqtDnQXh4E3JnyJMxaIRMQzgg5tZLoD+6LEM5Cs7SXQbHXw==
  • SPFv=spf1 include:spf.protection.outlook.com include:mailgun.org include:spf.ess.barracudanetworks.com -all
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