horn.de

Valid Email Server
Domain Lookup › horn.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
horn.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-27 10:22:50 UTC · ↺ Refresh

MX Hostnames

  • horn-de.mail.protection.outlook.com

MX Priorities

  • horn-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 217.154.4.181 ↩ mail.cygnus.de

Mail Server IPs

  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
  • 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com

SOA Record

Raw SOA ns.cygnus.de swsoft.pmh.de 1773810795 10800 3600 604800 10800
Primary NS (mname)
ns.cygnus.de
Admin Email (rname)
swsoft@pmh.de
Serial
1773810795
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s

Nameservers (NS)

ns2.cygnus.de
ns.cygnus.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms82496006
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