gratus.com.hk

Valid Email Server
Domain Lookup › gratus.com.hk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gratus.com.hk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 04:51:33 UTC · ↺ Refresh

MX Hostnames

  • gratus-com-hk.mail.protection.outlook.com

MX Priorities

  • gratus-com-hk.mail.protection.outlook.com: 10

A / AAAA Records

  • 47.57.153.96 (no PTR)

Mail Server IPs

  • 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
  • 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
  • 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA vip7.alidns.com hostmaster.hichina.com 2025121107 3600 1200 86400 600
Primary NS (mname)
vip7.alidns.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2025121107
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s

Nameservers (NS)

vip7.alidns.com
vip8.alidns.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:183.178.171.234 ip4:61.129.60.236 ip4:202.88.99.193 ip4:118.142.28.66 ip4:123.1.228.172 ip4:101.95.28.194 ip4:152.101.133.153 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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

4 records
  • SPFv=spf1 ip4:183.178.171.234 ip4:61.129.60.236 ip4:202.88.99.193 ip4:118.142.28.66 ip4:123.1.228.172 ip4:101.95.28.194 ip4:152.101.133.153 include:spf.protection.outlook.com -all
  • google-site-verification=HATFT4C0MVvVYfTybh8NmCwP_LwHW8_M1IzEuxSloG8
  • google-site-verification=AXleBPNn7rPQrqMHjJhl_mDA5JT2VBQws276STgf31s
  • MS=ms77544465
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