krebsgruppe.de

Valid Email Server
Domain Lookup › krebsgruppe.de

Domain Overview

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

Checked via [email protected] · 2026-03-28 12:24:11 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 185.155.193.230 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ns.x-ns.de hostmaster.rohwerder-isp.de 2026022704 7200 540 604800 86400
Primary NS (mname)
ns.x-ns.de
Admin Email (rname)
hostmaster@rohwerder-isp.de
Serial
2026022704
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns2.x-ns.de
ns3.x-ns.de
ns.x-ns.de

SPF Record

✓ Strict (-all)
v=spf1 a:k62457.coveto.de include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

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

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • google-site-verification=Y2SQdU0yycTEI_OcZJ0mH1ChjVfXSz7km0VCKaBZJQg
  • SPFv=spf1 a:k62457.coveto.de include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com -all
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