mrbleck.de

Valid Email Server
Domain Lookup › mrbleck.de

Domain Overview

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

Checked via [email protected] · 2026-03-21 11:14:41 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

  • 78.47.166.38 ↩ dedi3755.your-server.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 dns.osn.de root.osn.de 1717774204 14400 3600 1209600 86400
Primary NS (mname)
dns.osn.de
Admin Email (rname)
root@osn.de
Serial
1717774204
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

dns.osn.net
dns.osn.org
dns.osn.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.hornetsecurity.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

3 records
  • domainsecurity-verification=fdc3e57409803c8be48110d1f96da58fbee6b246
  • SPFv=spf1 include:spf.hornetsecurity.com -all
  • knowbe4-site-verification=86da098eade16f8a21a830f704f4cacc
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