thompsonschoolbook.com

Valid Email Server
Domain Lookup › thompsonschoolbook.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
thompsonschoolbook.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 20:58:22 UTC · ↺ Refresh

MX Hostnames

  • mx.coxmail.com
  • thompsonschoolbook-com.mail.protection.outlook.com

MX Priorities

  • thompsonschoolbook-com.mail.protection.outlook.com: 0
  • mx.coxmail.com: 10

A / AAAA Records

  • 75.126.242.148

Mail Server IPs

  • 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
  • 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
  • 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
  • 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
  • 173.45.18.105 ↩ mx22.oxsus-vadesecure.net
  • 68.14.216.234 ↩ mx.coxmail.com
  • 51.81.171.230
  • 173.45.18.104
  • 51.81.171.231

SOA Record

Raw SOA ns1.dsbserver.net hostmaster.dsbserver.net 34 1500 1200 1209600 3600
Primary NS (mname)
ns1.dsbserver.net
Admin Email (rname)
hostmaster@dsbserver.net
Serial
34
Refresh
1500s
Retry
1200s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns1.dsbserver.net
ns2.dsbserver.net

SPF Record

✓ Strict (-all)
v=spf1 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

2 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms12919126
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