cb-firm.com

Valid Email Server
Domain Lookup › cb-firm.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cb-firm.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 03:47:44 UTC · ↺ Refresh

MX Hostnames

  • cbfirm-com0e.mail.protection.outlook.com

MX Priorities

  • cbfirm-com0e.mail.protection.outlook.com: 0

A / AAAA Records

  • 170.249.206.34 ↩ ns3.josiesquehosting.com

Mail Server IPs

  • 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
  • 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
  • 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
  • 52.101.9.17 (no PTR)
  • 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.yourhostingaccount.com admin.yourhostingaccount.com 2010011161 10800 3600 604800 3600
Primary NS (mname)
ns1.yourhostingaccount.com
Admin Email (rname)
admin@yourhostingaccount.com
Serial
2010011161
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns2.yourhostingaccount.com
ns1.yourhostingaccount.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:outbound.mailhop.org ip4:66.90.168.118 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • SPFv=spf1 include:spf.protection.outlook.com include:outbound.mailhop.org ip4:66.90.168.118 -all
  • MS=ms51539968
  • _globalsign-domain-verification=Qb8CIoL1_cj7HttPfeqUn-PPHFo1wWl0EtXT-NV7Tp
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