Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
der-beck.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 02:16:58 UTC · ↺ Refresh
MX Hostnames
- mx04.hornetsecurity.com
- mx01.hornetsecurity.com
- mx03.hornetsecurity.com
- mx02.hornetsecurity.com
MX Priorities
- mx03.hornetsecurity.com: 30
- mx04.hornetsecurity.com: 40
- mx01.hornetsecurity.com: 10
- mx02.hornetsecurity.com: 20
A / AAAA Records
- 185.105.115.137 (no PTR)
Mail Server IPs
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
SOA Record
Raw SOA
dns.osn.de root.osn.de 1772126665 14400 3600 1209600 86400
Primary NS (mname)
dns.osn.de
Admin Email (rname)
root@osn.de
Serial
1772126665
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
dns.osn.de
dns.osn.net
dns.osn.org
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
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- domainsecurity-verification=3e0f15d6c05e31d3aee4daf7168745c300059f6d
- google-site-verification=fVnrADIAZipW2YZRXgU_FOwMnrdC1j5k4waomS-kIZg
- SPFv=spf1 include:spf.hornetsecurity.com -all
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