sperr-zellner.de

Valid Email Server
Domain Lookup › sperr-zellner.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sperr-zellner.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-30 11:58:50 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • mx02.hornetsecurity.com: 20
  • mx03.hornetsecurity.com: 30
  • mx04.hornetsecurity.com: 40
  • mx01.hornetsecurity.com: 10

A / AAAA Records

  • 85.13.141.184 ↩ dd21830.kasserver.com

Mail Server IPs

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

SOA Record

Raw SOA ns05.domaincontrol.com dns.jomax.net 2024111201 28800 7200 604800 600
Primary NS (mname)
ns05.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2024111201
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns06.domaincontrol.com
ns05.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.hornetsecurity.com include:_spf.onoffice.de include:spf.protection.outlook.com a mx ip4:80.237.212.211 ip4:87.230.104.202 ip4:80.237.138.0/24 ip6:2a01:488:42::/48 -all
📊 DNS lookups: 5/10
✓ 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

3 records
  • MS=ms14540905
  • SPFv=spf1 include:spf.hornetsecurity.com include:_spf.onoffice.de include:spf.protection.outlook.com a mx ip4:80.237.212.211 ip4:87.230.104.202 ip4:80.237.138.0/24 ip6:2a01:488:42::/48 -all
  • dg6tq3grumtqjd5kpkmrrpadg6
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