contoso.com

Valid Email Server
Domain Lookup › contoso.com

Domain Overview

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

Checked via [email protected] · 2026-03-23 15:41:40 UTC · ↺ Refresh

MX Hostnames

  • contoso-com.mail.protection.outlook.com

MX Priorities

  • contoso-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 20.236.44.162 (no PTR)
  • 20.231.239.246 (no PTR)
  • 20.70.246.20
  • 20.76.201.171
  • 20.112.250.133

Mail Server IPs

  • 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
  • 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
  • 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
  • 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
  • 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA ns1-205.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-205.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns3-205.azure-dns.org
ns4-205.azure-dns.info
ns1-205.azure-dns.com
ns2-205.azure-dns.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

5 records
  • MS=ms47806392
  • ms-domain-verification=2e80f95d-a89f-4e56-b4a6-d0b1ef123c46
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms67787810
  • MS=ms89099513
Full email verification for contoso.com

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