kueppersbusch.de

Valid Email Server
Domain Lookup › kueppersbusch.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
kueppersbusch.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 22:06:48 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • kueppersbusch-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 81.201.153.197 ↩ ip-81-201-153-197.static.reverse.dsi.net

Mail Server IPs

  • 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
  • 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
  • 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
  • 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com

SOA Record

Raw SOA pns.dtag.de dns.telekom.de 2025110300 10800 3600 2419200 3600
Primary NS (mname)
pns.dtag.de
Admin Email (rname)
dns@telekom.de
Serial
2025110300
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

pns.dtag.de
ns1.telekom.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com a:mail.kueppersbusch.com a:kbusch.dsinet.de a:kbhome.dsinet.de -all
📊 DNS lookups: 4/10
✓ 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

7 records
  • _iwyuxby4y3tirswxxeae8ti8pj48g75
  • SPFv=spf1 include:spf.protection.outlook.com a:mail.kueppersbusch.com a:kbusch.dsinet.de a:kbhome.dsinet.de -all
  • 202111082120421tan5ouasalqdn29aawe8jw0pv19e1ud7870zij5r40p2udgml
  • gfrsyv047dcjs2wml2n9yktq206wyn4x
  • p6s6sd0bzzqgkkny8s6936dmtvl9c0s8
  • _4c8wu2stk4a9drlj5212ypid15mnk9t
  • knowbe4-site-verification=4706d7080ad552aa0d753a615b519631
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for kueppersbusch.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits