rkh-bremen.de

Valid Email Server
Domain Lookup › rkh-bremen.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rkh-bremen.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 09:40:59 UTC · ↺ Refresh

MX Hostnames

  • rkhbremen-de0i.mail.protection.outlook.com

MX Priorities

  • rkhbremen-de0i.mail.protection.outlook.com: 5

A / AAAA Records

  • 216.162.200.200 (no PTR)

Mail Server IPs

  • 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com

SOA Record

Raw SOA ns.checkdomain.de hostmaster.checkdomain.de 2026021401 40000 7200 604800 3600
Primary NS (mname)
ns.checkdomain.de
Admin Email (rname)
hostmaster@checkdomain.de
Serial
2026021401
Refresh
40000s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.checkdomain.de
ns2.checkdomain.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com a:mail.fp-sign.com ip4:212.89.135.8 ip4:195.243.66.157 ip4:83.246.89.68/32 -all
📊 DNS lookups: 2/10
✓ 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

8 records
  • MS=ms55259391
  • swisssign-check=Bu4o6J59AvPJlQhTUyG5hNY3Y3s
  • SPFv=spf1 include:spf.protection.outlook.com a:mail.fp-sign.com ip4:212.89.135.8 ip4:195.243.66.157 ip4:83.246.89.68/32 -all
  • swisssign-check=9eTZoRSgNU7KQ0dQv7DgwlOZeYI
  • swisssign-check=0XnJSFOIs668tUVICtS4zcPd56I
  • facebook-domain-verification=10qdh69pb849bs5ty1of3e6e2z3u7u
  • swisssign-check=4AfchkADIVBtMNEep0nPVaEVc74
  • swisssign-check=lzM_bD57Sxl-R33JILPQWVwZh_Q
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