nrbb.de

Valid Email Server
Domain Lookup › nrbb.de

Domain Overview

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

Checked via [email protected] · 2026-04-02 18:56:42 UTC · ↺ Refresh

MX Hostnames

  • smtpin.rzone.de

MX Priorities

  • smtpin.rzone.de: 5

A / AAAA Records

  • 104.21.17.116 (no PTR)
  • 172.67.175.200 (no PTR)
  • 2606:4700:3031::ac43:afc8 (no PTR)
  • 2606:4700:3033::6815:1174 (no PTR)

Mail Server IPs

  • 81.169.145.97 ↩ smtpin.rzone.de
  • 2a01:238:20a:202:50f0::1097 ↩ smtpin.rzone.de

SOA Record

Raw SOA mckenzie.ns.cloudflare.com dns.cloudflare.com 2400073705 10000 2400 604800 1800
Primary NS (mname)
mckenzie.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400073705
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

mckenzie.ns.cloudflare.com
ram.ns.cloudflare.com

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

DMARC Record

✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

No TXT records found.

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