gsb-gruppe.de

Valid Email Server
Domain Lookup › gsb-gruppe.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gsb-gruppe.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 07:17:23 UTC · ↺ Refresh

MX Hostnames

  • gsbgruppe-de0i.mail.protection.outlook.com

MX Priorities

  • gsbgruppe-de0i.mail.protection.outlook.com: 0

A / AAAA Records

  • 185.230.63.107 ↩ unalocated.63.wixsite.com

Mail Server IPs

  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns1053.ui-dns.org hostmaster.1und1.de 2017050450 28800 7200 604800 300
Primary NS (mname)
ns1053.ui-dns.org
Admin Email (rname)
hostmaster@1und1.de
Serial
2017050450
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1053.ui-dns.com
ns1053.ui-dns.org
ns1053.ui-dns.de
ns1053.ui-dns.biz

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com 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

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

6 records
  • sophos-domain-verification=56258254e9329b18da451b762e0abf043ed910845718ccb638c8e75ca2fb309e
  • 7jk02cgus1h8frc0uvvsp80ipt
  • 8r39v561ctfan3tdeg4i62tgn4
  • facebook-domain-verification=2iwb67hvd9r58jkszlwoodzh5ztg6y
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf-eu.ionos.com ~all
  • MS=ms90367541
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 gsb-gruppe.de

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

No credit card required
Get 1,000 Free Credits