Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
holtecnlo.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 18:21:03 UTC · ↺ Refresh
MX Hostnames
- mx01.hornetsecurity.com
- mx02.hornetsecurity.com
- mx03.hornetsecurity.com
- mx04.hornetsecurity.com
MX Priorities
- mx04.hornetsecurity.com: 40
- mx03.hornetsecurity.com: 30
- mx01.hornetsecurity.com: 10
- mx02.hornetsecurity.com: 20
A / AAAA Records
- 212.63.130.14 ↩ linux22.unixserver.org
- 2a02:708::46:0:0:0:2 ↩ linux22.unixserver.org
Mail Server IPs
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
SOA Record
Raw SOA
ns11.nameserver.de dnsmaster.ns11.nameserver.de 2025110701 86400 3600 604800 86400
Primary NS (mname)
ns11.nameserver.de
Admin Email (rname)
dnsmaster@ns11.nameserver.de
Serial
2025110701
Refresh
86400s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns11.nameserver.de
ns12.nameserver.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:217.6.211.82 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 ip4:217.6.211.82 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all
- knowbe4-site-verification=21fc8c997e7a16e840b8066b26f7abb7
- MS=ms69240065
Full email verification for holtecnlo.de
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