bbtgruppe.de

Valid Email Server
Domain Lookup › bbtgruppe.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
bbtgruppe.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 19:10:21 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 134.119.233.6 ↩ mc20695.ispgateway.de
  • 2a00:1169:103:13c0:: ↩ mc20695.ispgateway.de

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 ns81.domaincontrol.com dns.jomax.net 2026030201 28800 7200 604800 600
Primary NS (mname)
ns81.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026030201
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns82.domaincontrol.com
ns81.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:mailgun.org a include:ispgateway.de -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=10; sp=none; aspf=r
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
⚠ Policy applies to 10% of failing messages only

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

6 records
  • MS=ms81947790
  • swisssign-check=iiFbjJU0EPPPqIGrMRWQqmRjRjo
  • O0GpmYtSrSwuvnMQRDiwtJWbYjTLEpaEvHMO7Afc4nCoECMym3nYMiA2XTyjuSSmQ59BPKv/Us0J1bIOP7aoUg==
  • apple-domain-verification=2PbaCvDSMoz4zeQh
  • SPFv=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:mailgun.org a include:ispgateway.de -all
  • google-site-verification=wP8K6nzfhUrO7ouloL6k3Cic6AqmSIYhzdpV1vqlpr8
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