bluethner.de

Valid Email Server
Domain Lookup › bluethner.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
bluethner.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 15:45:37 UTC · ↺ Refresh

MX Hostnames

  • bluethner-de.mail.protection.outlook.com

MX Priorities

  • bluethner-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 212.63.131.242 ↩ linux09.rw.serviceprovider.de

Mail Server IPs

  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA ns3.nameserver.de dnsmaster.ns3.nameserver.de 2024020900 11000 3600 604800 11000
Primary NS (mname)
ns3.nameserver.de
Admin Email (rname)
dnsmaster@ns3.nameserver.de
Serial
2024020900
Refresh
11000s
Retry
3600s
Expire
604800s
Minimum TTL
11000s

Nameservers (NS)

ns4.nameserver.de
ns3.nameserver.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

2 records
  • MS=ms10848731
  • SPFv=spf1 include:spf.protection.outlook.com -all
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