sst-steuerberatung.de

Valid Email Server
Domain Lookup › sst-steuerberatung.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sst-steuerberatung.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 20:58:18 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 81.173.194.3 ↩ webcluster01.netcologne.de
  • 2001:4dd0:100:1f00:80::80:1 ↩ webcluster01.netcologne.de

Mail Server IPs

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

SOA Record

Raw SOA dns11.netcologne.de hostmaster.netcologne.de 2025101705 28800 7200 604800 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2025101705
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

dns11.netcologne.de
dns12.netcologne.de
dns13.netcologne.de
dns14.netcologne.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf.de.umantis.com include:spf.pressfile.de include:spf-policy.mailrelay-out.netcologne.de -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=ms24040382
  • MS=ms12320002
  • SPFv=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf.de.umantis.com include:spf.pressfile.de include:spf-policy.mailrelay-out.netcologne.de -all
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