febu.de

Valid Email Server
Domain Lookup › febu.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
febu.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 10:58:16 UTC · ↺ Refresh

MX Hostnames

  • mx03.hornetsecurity.com
  • mx01.hornetsecurity.com
  • mx04.hornetsecurity.com
  • mx02.hornetsecurity.com

MX Priorities

  • mx01.hornetsecurity.com: 10
  • mx02.hornetsecurity.com: 20
  • mx03.hornetsecurity.com: 30
  • mx04.hornetsecurity.com: 40

A / AAAA Records

  • 45.144.187.21 (no PTR)

Mail Server IPs

  • 94.100.132.8 ↩ mx01.hornetsecurity.com
  • 94.100.136.8 ↩ mx02.hornetsecurity.com
  • 94.100.134.8 ↩ mx03.hornetsecurity.com
  • 94.100.136.7 ↩ mx04.hornetsecurity.com

SOA Record

Raw SOA ns1.first-ns.de dns.hetzner.com 2025121115 14400 1800 604800 86400
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2025121115
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns1.first-ns.de
robotns2.second-ns.de
robotns3.second-ns.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:80.152.174.37 ip4:45.144.187.21 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=s;adkim=s;fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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 ip4:80.152.174.37 ip4:45.144.187.21 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
  • MS=ms48520718
  • domainVerification=f9c854c4-d22e-4083-b231-865572a81fcf
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