duh.de

Valid Email Server
Domain Lookup › duh.de

Domain Overview

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

Checked via [email protected] · 2026-03-29 05:37:22 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 195.34.83.46 ↩ server1.holzmann-web.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 grace.ns.cloudflare.com dns.cloudflare.com 2395699950 10000 2400 604800 1800
Primary NS (mname)
grace.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2395699950
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

grace.ns.cloudflare.com
rick.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:emsd1.com include:_spf.duh.de ip4:195.34.83.46 ip4:5.9.249.1 ip4:88.134.178.187 ip4:62.146.106.0/24 ip4:89.22.100.62 ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine

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

8 records
  • MS=ms32739540
  • MS=ms61489296
  • apple-domain-verification=7Zo7oa5CQXSudGrZ
  • google-site-verification=CS_8cWSANYRBR1CMaHv7GPu5X-xhjo4vQ0a2sIgFJb8
  • google-site-verification=PM_xrNi-Seu3oVltZX_ovAWpj4Dg6O77ALVwrSQWT3g
  • kK9qe+Vyy1YUvAmDpT6r/R1C7y8iq9NBteCsrb2sV8H6PLFSQplVKoLHwcRBD61OapxXTBYIt9g0bcZlJZYWZg==
  • SPFv=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:emsd1.com include:_spf.duh.de ip4:195.34.83.46 ip4:5.9.249.1 ip4:88.134.178.187 ip4:62.146.106.0/24 ip4:89.22.100.62 ~all
  • Dr+EJbsmNS0n+IxMye4VAPm6CN4xZFW6Lewu36AmZnDeU1umwwdukakp7HbVcEB0vyLDTYxSGUtXnFnLmg7scw==
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