wolkenburg.de

Valid Email Server

Domain Overview

DNS: ✓ 1mo ago Checker: ✓ 1mo ago
wolkenburg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-25 02:44:25 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • mx01.ionos.de
  • mx00.ionos.de

MX Priorities

  • mx01.ionos.de: 10
  • mx00.ionos.de: 10

A / AAAA Records

  • 185.175.196.120 (no PTR)
  • 2a00:1c98:60:1161::7c58:7574 (no PTR)

Mail Server IPs

  • 217.72.192.67 ↩ mx01.kundenserver.de
  • 212.227.15.41 ↩ mx00.kundenserver.de

SOA Record

Raw SOA ns1033.ui-dns.biz hostmaster.1und1.de 2017052230 28800 7200 604800 300
Primary NS (mname)
ns1033.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.de
Serial
2017052230
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1033.ui-dns.com
ns1033.ui-dns.org
ns1033.ui-dns.de
ns1033.ui-dns.biz

SPF Record

✓ Soft Fail (~all)
v=spf1 a include:servers.mcsv.net include:turbo-smtp.com include:_spf.perfora.net include:_spf-eu.ionos.com include:_spf.kundenserver.de ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;sp=none;pct=100;adkim=r;aspf=r;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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
  • 81cvp80bd5se5d1q689pj6s0mk
  • qubh86s9dq7k2ims79nk8hu94d
  • siihcar33q04d1n0sehige79dr
  • sig11acve0pn8pi9upl5neq2s9
  • SPFv=spf1 a include:servers.mcsv.net include:turbo-smtp.com include:_spf.perfora.net include:_spf-eu.ionos.com include:_spf.kundenserver.de ~all
  • tf9c641upf92m34u3eule65vn3
  • kvffu5mlcemkhlperlb7qa6bb0
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 · Customize →
See demo & docs
Deep verification
Full email verification for wolkenburg.de

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

No credit card required
Get 1,000 Free Credits