duallbuilding.com

Valid Email Server
Domain Lookup › duallbuilding.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
duallbuilding.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-10-03 09:38:11 UTC · ↺ Refresh

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MX Hostnames

  • duallbuilding-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 52.101.60.191 ↩ mail-bn0pr05cu00107.inbound.protection.outlook.com
  • 52.101.60.68 ↩ mail-bnypr02cu00104.inbound.protection.outlook.com
  • 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
  • 52.101.60.173 ↩ mail-bn3pr0501cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:c922::6 ↩ mail-bl2pr02cu00506.inbound.protection.outlook.com
  • 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f909::4 ↩ mail-bn0pr03cu00304.inbound.protection.outlook.com
  • 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.milesdns.com chris.4miles.com 2021062301 86400 3600 86400 3600
Primary NS (mname)
ns1.milesdns.com
Admin Email (rname)
chris@4miles.com
Serial
2021062301
Refresh
86400s
Retry
3600s
Expire
86400s
Minimum TTL
3600s

Nameservers (NS)

ns1.milesdns.com
ns2.milesdns.com

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=ms51865205
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