kwb.de

Valid Email Server

Domain Overview

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

Checked via [email protected] · 2026-03-24 16:02:54 UTC · ↺ Refresh

MX Hostnames

  • kwb-de.mail.protection.outlook.com

MX Priorities

  • kwb-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 85.215.125.128 (no PTR)

Mail Server IPs

  • 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
  • 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com

SOA Record

Raw SOA ns1020.ui-dns.biz hostmaster.kundenserver.de 2017040590 28800 7200 604800 300
Primary NS (mname)
ns1020.ui-dns.biz
Admin Email (rname)
hostmaster@kundenserver.de
Serial
2017040590
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1020.ui-dns.org
ns1020.ui-dns.de
ns1020.ui-dns.com
ns1020.ui-dns.biz

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.mailjet.com include:spf.protection.outlook.com a:ec2-52-18-230-4.eu-west-1.compute.amazonaws.com ip4:82.165.146.114 ip4:195.20.241.209 ~all
📊 DNS lookups: 3/10
~ 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
  • SPFv=spf1 include:spf.mailjet.com include:spf.protection.outlook.com a:ec2-52-18-230-4.eu-west-1.compute.amazonaws.com ip4:82.165.146.114 ip4:195.20.241.209 ~all
  • ZOOM_verify_YibkjJlFGOfFc3Hz1YTLCG
  • MS=ms41911273
  • NcbH2+hv67Cw3OU3PmvzmzjmQwyB+sRvhoVoHNN+yPJX03QOIFsz+c/xbTFnrN5iPSjcP8uGxGkt0q+kPotbGg==
Full email verification for kwb.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits