rhein-ruhr-gmbh.de

Valid Email Server
Domain Lookup › rhein-ruhr-gmbh.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rhein-ruhr-gmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 08:49:17 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 217.160.0.77 ↩ 217-160-0-77.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com

Mail Server IPs

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

SOA Record

Raw SOA ns1076.ui-dns.com hostmaster.1und1.de 2016111030 28800 7200 604800 300
Primary NS (mname)
ns1076.ui-dns.com
Admin Email (rname)
hostmaster@1und1.de
Serial
2016111030
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1076.ui-dns.com
ns1076.ui-dns.biz
ns1076.ui-dns.de
ns1076.ui-dns.org

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.hornetsecurity.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate 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

4 records
  • MS=66DD86C41193C7CDD4BB4A30AF456D6AF5FC36D2
  • MS=ms69390880
  • SPFv=spf1 include:spf.hornetsecurity.com ~all
  • v=verifydomain MS=3145355
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