gmh-gruppe.de

Valid Email Server
Domain Lookup › gmh-gruppe.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gmh-gruppe.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 10:26:41 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.hornetsecurity.com
  • mx02.hornetsecurity.com
  • mx03.hornetsecurity.com
  • mx04.hornetsecurity.com

MX Priorities

  • mx02.hornetsecurity.com: 20
  • mx04.hornetsecurity.com: 40
  • mx03.hornetsecurity.com: 30
  • mx01.hornetsecurity.com: 10

A / AAAA Records

  • 45.144.187.21 (no PTR)

Mail Server IPs

  • 94.100.136.8 ↩ mx02.hornetsecurity.com
  • 94.100.136.7 ↩ mx04.hornetsecurity.com
  • 94.100.134.8 ↩ mx03.hornetsecurity.com
  • 94.100.132.8 ↩ mx01.hornetsecurity.com

SOA Record

Raw SOA nsa4.schlundtech.de hostmaster.gmh-systems.de 2025112404 43200 7200 1209600 600
Primary NS (mname)
nsa4.schlundtech.de
Admin Email (rname)
hostmaster@gmh-systems.de
Serial
2025112404
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s

Nameservers (NS)

nsc4.schlundtech.de
nsa4.schlundtech.de
nsd4.schlundtech.de
nsb4.schlundtech.de

SPF Record

✓ Strict (-all)
v=spf1 a include:spf.hornetsecurity.com include:spf.protection.outlook.com include:successfactors.eu include:marketing.dynamics.com include:spf.mailjet.com include:agenturserver.de ip4:193.228.122.60/32 ip4:193.228.122.61/32 ip4:3.121.168.52/32 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=none; pct=100; adkim=r; aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none

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

7 records
  • apple-domain-verification=FuAUneuc1yTxAnrY
  • domainVerification=75fb5606-d4b0-44d5-8356-0d50c4bd8de3
  • 7SEUGfiPYX4Nddc4H1FKLkRMSv9VK5X5I+UzB5zCo3xvL/PAZsnZRWQbyMVAfyj/qSBs6k+wp/pr8yGXpc4Cjg==
  • SPFv=spf1 a include:spf.hornetsecurity.com include:spf.protection.outlook.com include:successfactors.eu include:marketing.dynamics.com include:spf.mailjet.com include:agenturserver.de ip4:193.228.122.60/32 ip4:193.228.122.61/32 ip4:3.121.168.52/32 -all
  • ms-domain-verification=34bb4de9-c695-447e-8885-e5dde059343d
  • MS=ms75996150
  • d365mktkey=2fRAgQiff98K7yMbDcPsZ4S6B0UaK0vAehVxiV6bu1sx
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 gmh-gruppe.de

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

No credit card required
Get 1,000 Free Credits