passport.com

Valid Email Server
Domain Lookup › passport.com

Domain Overview

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

Checked via [email protected] · 2026-03-21 15:57:59 UTC · ↺ Refresh

MX Hostnames

  • outlook-com.olc.protection.outlook.com

MX Priorities

  • outlook-com.olc.protection.outlook.com: 10

A / AAAA Records

  • 52.164.206.56 (no PTR)
  • 104.215.95.187 (no PTR)

Mail Server IPs

  • 52.101.73.5 (no PTR)
  • 40.93.192.3 (no PTR)
  • 52.101.41.55 (no PTR)
  • 52.101.68.17 (no PTR)

SOA Record

Raw SOA ns1-37.azure-dns.com aadnetsre.microsoft.com 2022020901 3600 600 604800 300
Primary NS (mname)
ns1-37.azure-dns.com
Admin Email (rname)
aadnetsre@microsoft.com
Serial
2022020901
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

a5-65.akam.net
a1-115.akam.net
a28-64.akam.net
a9-66.akam.net
ns1-37.azure-dns.com
ns4-37.azure-dns.info
ns2-37.azure-dns.net
ns3-37.azure-dns.org

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

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

No TXT records found.

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