rdk-ag.de

Valid Email Server
Domain Lookup › rdk-ag.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rdk-ag.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-27 15:49:12 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 178.16.61.59 ↩ r10463.agenturserver.it

Mail Server IPs

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

SOA Record

Raw SOA ns.udag.de hostmaster.united-domains.de 2024060716 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024060716
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.udag.org
ns.udag.de
ns.udag.net

SPF Record

✓ Strict (-all)
v=spf1 include:_spf_eucentral1.prod.hydra.sophos.com mx a:emita.mittwald.de include:spf.hornetsecurity.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=0
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

4 records
  • MS=ms40705174
  • sophos-domain-verification=6cc722f2378eda1f2c38145c1c878738a5c49eb5
  • apple-domain-verification=06krmYO6PGsWHbI2
  • SPFv=spf1 include:_spf_eucentral1.prod.hydra.sophos.com mx a:emita.mittwald.de include:spf.hornetsecurity.com -all
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