immokrebs.de

Valid Email Server
Domain Lookup › immokrebs.de

Domain Overview

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

Checked via [email protected] · 2026-03-21 21:29:30 UTC · ↺ Refresh

MX Hostnames

  • mx3.onoffice.de
  • mx1.onoffice.de
  • mx2.onoffice.de

MX Priorities

  • mx3.onoffice.de: 20
  • mx1.onoffice.de: 10
  • mx2.onoffice.de: 10

A / AAAA Records

  • 217.160.0.251 ↩ 217-160-0-251.elastic-ssl.ui-r.com

Mail Server IPs

  • 95.130.253.56 ↩ mx3.onoffice.de
  • 95.130.253.60 ↩ mx1.onoffice.de
  • 95.130.253.71 ↩ mx2.onoffice.de

SOA Record

Raw SOA ns1019.ui-dns.com hostmaster.schlund.de 2016042006 28800 7200 604800 300
Primary NS (mname)
ns1019.ui-dns.com
Admin Email (rname)
hostmaster@schlund.de
Serial
2016042006
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1019.ui-dns.com
ns1019.ui-dns.org
ns1019.ui-dns.biz
ns1019.ui-dns.de

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.onoffice.de include:_spf-eu.ionos.com ~all
📊 DNS lookups: 2/10
~ 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

1 record
  • SPFv=spf1 include:_spf.onoffice.de include:_spf-eu.ionos.com ~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 immokrebs.de

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

No credit card required
Get 1,000 Free Credits