knebes-bauunternehmung.de

Valid Email Server
Domain Lookup › knebes-bauunternehmung.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
knebes-bauunternehmung.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 16:02:56 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

  • mx10.rgfi.net
  • mx30.rgfi.net
  • mx20.rgfi.net

MX Priorities

  • mx20.rgfi.net: 20
  • mx30.rgfi.net: 30
  • mx10.rgfi.net: 10

A / AAAA Records

  • 188.64.57.13 ↩ vs13271.internet1.de

Mail Server IPs

  • 185.33.216.22 ↩ mx20.rgfi.net
  • 185.33.216.23 ↩ mx30.rgfi.net
  • 185.33.216.21 ↩ mx10.rgfi.net

SOA Record

Raw SOA ns.transresult.net hostmaster.transresult.net 2023071201 43200 7200 1209600 86400
Primary NS (mname)
ns.transresult.net
Admin Email (rname)
hostmaster@transresult.net
Serial
2023071201
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns2.transresult.net
ns.transresult.net
ns3.transresult.net
ns4.transresult.net

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:185.33.216.167 -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

2 records
  • SPFv=spf1 a mx ip4:185.33.216.167 -all
  • MS=ms99077538
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 knebes-bauunternehmung.de

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

No credit card required
Get 1,000 Free Credits