csf-gmbh.de

Valid Email Server
Domain Lookup › csf-gmbh.de

Domain Overview

DNS: ✓ 1mo ago Checker: ✓ 1mo ago
csf-gmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-06 15:22:33 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • mx03.hornetsecurity.com: 100
  • mx02.hornetsecurity.com: 20
  • mx04.hornetsecurity.com: 200
  • mx01.hornetsecurity.com: 10

A / AAAA Records

  • 85.13.150.11 ↩ dd32432.kasserver.com

Mail Server IPs

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

SOA Record

Raw SOA shades11.rzone.de hostmaster.strato-rz.de 2020061016 86400 7200 604800 300
Primary NS (mname)
shades11.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020061016
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks13.rzone.de
shades11.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 a mx a:mx1.meinhardt.biz ip4:80.155.35.98 include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

2 records
  • MS=ms90587721
  • SPFv=spf1 a mx a:mx1.meinhardt.biz ip4:80.155.35.98 include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
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