ib-scheffler.de

Valid Email Server
Domain Lookup › ib-scheffler.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ib-scheffler.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 03:44:21 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 217.18.191.120 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ns0.isd-internet.de domain.isd-internet.de 2025111301 28800 3600 604800 3600
Primary NS (mname)
ns0.isd-internet.de
Admin Email (rname)
domain@isd-internet.de
Serial
2025111301
Refresh
28800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns20.isd-internet.de
ns0.isd-internet.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:217.18.190.4 ip4:217.18.190.5 ip4:217.18.191.31 ip4:217.18.191.36 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
📊 DNS lookups: 4/10
✓ 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
  • SPFv=spf1 a mx ip4:217.18.190.4 ip4:217.18.190.5 ip4:217.18.191.31 ip4:217.18.191.36 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
  • MS=ms72798854
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