mieterschutz-koeln.de

Valid Email Server
Domain Lookup › mieterschutz-koeln.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
mieterschutz-koeln.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 12:38:22 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 81.169.145.66 ↩ w02.rzone.de
  • 2a01:238:20a:202:1066:: ↩ w02.rzone.de

Mail Server IPs

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

SOA Record

Raw SOA shades10.rzone.de hostmaster.strato-rz.de 2020050774 86400 7200 604800 300
Primary NS (mname)
shades10.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050774
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks18.rzone.de
shades10.rzone.de

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:spf.hornetsecurity.com include:_spf.aareon.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=none; pct=100; adkim=r; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none

DKIM Selectors

✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • SPFv=spf1 include:spf.protection.outlook.com include:spf.hornetsecurity.com include:_spf.aareon.com ~all
  • apple-domain-verification=Zc90jKNqrbKapsf9
  • MS=ms90375698
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