t5systems.com

Valid Email Server
Domain Lookup › t5systems.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
t5systems.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 00:20:19 UTC · ↺ Refresh

MX Hostnames

  • t5systems-com.mail.protection.outlook.com

MX Priorities

  • t5systems-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 35.172.94.1 ↩ staticip.multiscreensite.com
  • 100.24.208.97 ↩ staticip2.multiscreensite.com

Mail Server IPs

  • 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
  • 52.101.192.0 ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
  • 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
  • 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
  • 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:c944:: ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.customfithosting.com hostmaster.t5systems.com 2023112409 3600 600 1209600 14400
Primary NS (mname)
ns1.customfithosting.com
Admin Email (rname)
hostmaster@t5systems.com
Serial
2023112409
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
14400s

Nameservers (NS)

ns1.customfithosting.com
ns2.customfithosting.com

SPF Record

✓ Strict (-all)
v=spf1 include:canada3-mw.rebel.com include:spf.protection.outlook.com -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

✗ 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

3 records
  • SPFv=spf1 include:canada3-mw.rebel.com include:spf.protection.outlook.com -all
  • a09t1ns38bil6sjrp4grhld5df
  • google-site-verification=JrLzsDzthd0h71RYNIq21r9N4_QLSkYq82VYGVO-OGo
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