fu-bb.de

Valid Email Server
Domain Lookup › fu-bb.de

Domain Overview

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

Checked via [email protected] · 2026-03-30 16:29:15 UTC · ↺ Refresh

MX Hostnames

  • mail4.internet-xs.de

MX Priorities

  • mail4.internet-xs.de: 50

A / AAAA Records

  • 212.58.66.156 (no PTR)

Mail Server IPs

  • 212.58.67.49 ↩ centos2.internet-xs.de

SOA Record

Raw SOA ns.region-s.de domainadmin.region-s.com 2024040800 10800 3600 604800 86400
Primary NS (mname)
ns.region-s.de
Admin Email (rname)
domainadmin@region-s.com
Serial
2024040800
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns3.internet-xs.net
ns2.region-s.com
ns.region-s.de

SPF Record

✓ Strict (-all)
v=spf1 a mx a:cdu-bb.de ip4:83.138.86.253 a:zeface.han-solo.net include:internet-xs.de -all
📊 DNS lookups: 5/10
✓ 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 mx a:cdu-bb.de ip4:83.138.86.253 a:zeface.han-solo.net include:internet-xs.de -all
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