tuebingen.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tuebingen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 10:39:33 UTC · ↺ Refresh

MX Hostnames

  • mx8.kvnbw.de
  • mx7.kvnbw.de
  • mx6.kvnbw.de
  • mx9.kvnbw.de

MX Priorities

  • mx8.kvnbw.de: 10
  • mx7.kvnbw.de: 10
  • mx9.kvnbw.de: 10
  • mx6.kvnbw.de: 10

A / AAAA Records

  • 193.197.23.51 ↩ www.tuebingen.de
  • 2001:7c7:1708::3 ↩ www.tuebingen.de

Mail Server IPs

  • 194.59.36.34 ↩ mx8.kvnbw.de
  • 194.0.94.49 ↩ mx7.kvnbw.de
  • 194.59.36.35 ↩ mx9.kvnbw.de
  • 194.0.94.48 ↩ mx6.kvnbw.de

SOA Record

Raw SOA ns1.tuebingen.de hostmaster.tuebingen.de 2026032002 21600 1800 2419200 86400
Primary NS (mname)
ns1.tuebingen.de
Admin Email (rname)
hostmaster@tuebingen.de
Serial
2026032002
Refresh
21600s
Retry
1800s
Expire
2419200s
Minimum TTL
86400s

Nameservers (NS)

ns1.tuebingen.de
dns5.belwue.de
dns1.belwue.de
dns3.belwue.de

SPF Record

✓ Soft Fail (~all)
v=spf1 mx include:spf.protect.kvnbw.de a:smtpdvd1.kvnbw.de a:smtpdvd2.kvnbw.de include:spf.protection.outlook.com include:_spf.belwue.de ip4:193.197.23.36 ip4:159.69.143.158 ip4:94.16.113.42 ip4:85.214.133.98 ip6:2a01:4f8:231:25dc::2 a:ferienprogramm-online.de ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; adkim=r; aspf=s; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

2 records
  • google-site-verification=6AMFFUeCeKX3TcI44SsQiftxrsNPHURDpwKm7Sxed9w
  • SPFv=spf1 mx include:spf.protect.kvnbw.de a:smtpdvd1.kvnbw.de a:smtpdvd2.kvnbw.de include:spf.protection.outlook.com include:_spf.belwue.de ip4:193.197.23.36 ip4:159.69.143.158 ip4:94.16.113.42 ip4:85.214.133.98 ip6:2a01:4f8:231:25dc::2 a:ferienprogramm-online.de ~all
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 tuebingen.de

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

No credit card required
Get 1,000 Free Credits