kubus-immobilien.de

Valid Email Server
Domain Lookup › kubus-immobilien.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
kubus-immobilien.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 22:48:05 UTC · ↺ Refresh

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MX Hostnames

  • kubusimmobilien-de01c.mail.protection.outlook.com

MX Priorities

  • kubusimmobilien-de01c.mail.protection.outlook.com: 3600

A / AAAA Records

  • 217.160.0.134 ↩ 217-160-0-134.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::235 ↩ 2001-08d8-100f-f000-0000-0000-0000-0235.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com

SOA Record

Raw SOA ns1035.ui-dns.org hostmaster.1und1.de 2017050320 28800 7200 604800 300
Primary NS (mname)
ns1035.ui-dns.org
Admin Email (rname)
hostmaster@1und1.de
Serial
2017050320
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1035.ui-dns.biz
ns1035.ui-dns.org
ns1035.ui-dns.de
ns1035.ui-dns.com

SPF Record

✓ Strict (-all)
v=spf1 a:fw.kubus-immobilien.de 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

1 record
  • SPFv=spf1 a:fw.kubus-immobilien.de include:spf.protection.outlook.com -all
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