indigoduesseldorf.com

Valid Email Server
Domain Lookup › indigoduesseldorf.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
indigoduesseldorf.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 01:30:48 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

  • mx04.hornetsecurity.com
  • mx02.hornetsecurity.com
  • mx01.hornetsecurity.com
  • mx03.hornetsecurity.com

MX Priorities

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

A / AAAA Records

  • 176.52.246.8 ↩ r3890.agenturserver.it

Mail Server IPs

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

SOA Record

Raw SOA ns3.nsentry.de hostmaster.indigoduesseldorf.com 2017013000 86400 7200 3600000 172800
Primary NS (mname)
ns3.nsentry.de
Admin Email (rname)
hostmaster@indigoduesseldorf.com
Serial
2017013000
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
172800s

Nameservers (NS)

ns3.nsentry.de
ns4.nsentry.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.hornetsecurity.com include:serenata-services.com include:agenturserver.de -all
📊 DNS lookups: 4/10
✓ 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 include:spf.protection.outlook.com include:spf.hornetsecurity.com include:serenata-services.com include:agenturserver.de -all
  • MS=ms26003401
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 indigoduesseldorf.com

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

No credit card required
Get 1,000 Free Credits