Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
langner-burmeister.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 14:19:57 UTC · ↺ Refresh
MX Hostnames
- mx01.hornetsecurity.com
- mx04.hornetsecurity.com
- mx02.hornetsecurity.com
- mx03.hornetsecurity.com
MX Priorities
- mx01.hornetsecurity.com: 9
- mx02.hornetsecurity.com: 20
- mx03.hornetsecurity.com: 30
- mx04.hornetsecurity.com: 40
A / AAAA Records
- 104.20.27.124 (no PTR)
- 172.66.144.158 (no PTR)
- 2606:4700:10::ac42:909e (no PTR)
- 2606:4700:10::6814:1b7c (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
eleanor.ns.cloudflare.com dns.cloudflare.com 2398559238 10000 2400 604800 1800
Primary NS (mname)
eleanor.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398559238
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lou.ns.cloudflare.com
eleanor.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:onoffice.de ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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:onoffice.de ~all
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