back-office-cologne.de

Valid Email Server
Domain Lookup › back-office-cologne.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
back-office-cologne.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 11:15:12 UTC · ↺ Refresh

MX Hostnames

  • backofficecologne-de01bi.mail.protection.outlook.com

MX Priorities

  • backofficecologne-de01bi.mail.protection.outlook.com: 1

A / AAAA Records

  • 178.254.11.55 ↩ sh4-8.1blu.de

Mail Server IPs

  • 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
  • 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
  • 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns01.1blu.de hostmaster.1blu.de 2024052802 43200 5400 604800 86400
Primary NS (mname)
ns01.1blu.de
Admin Email (rname)
hostmaster@1blu.de
Serial
2024052802
Refresh
43200s
Retry
5400s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns01.1blu.de
ns02.1blu.de

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

1 record
  • SPFv=spf1 include:spf.protection.outlook.com -all
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