Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
immo-vbs.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:01:24 UTC · ↺ Refresh
MX Hostnames
- mx02.hornetsecurity.com
- mx01.hornetsecurity.com
- mx03.hornetsecurity.com
- mx04.hornetsecurity.com
MX Priorities
- mx03.hornetsecurity.com: 200
- mx04.hornetsecurity.com: 200
- mx02.hornetsecurity.com: 20
- mx01.hornetsecurity.com: 10
A / AAAA Records
- 81.169.145.152 ↩ w98.rzone.de
- 2a01:238:20a:202:1152:: ↩ w98.rzone.de
Mail Server IPs
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
SOA Record
Raw SOA
docks20.rzone.de hostmaster.strato-rz.de 2020050879 86400 7200 604800 300
Primary NS (mname)
docks20.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050879
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks20.rzone.de
shades15.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com ip4:46.252.138.188/30 ip4:89.244.150.156 ip4:62.225.144.1 ip4:195.145.146.1 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
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- MS=ms37719753
- SPFv=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com ip4:46.252.138.188/30 ip4:89.244.150.156 ip4:62.225.144.1 ip4:195.145.146.1 -all
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