n-tu.de

Valid Email Server
Domain Lookup › n-tu.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
n-tu.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 00:35:30 UTC · ↺ Refresh

MX Hostnames

  • ntu-de0c.mail.protection.outlook.com

MX Priorities

  • ntu-de0c.mail.protection.outlook.com: 0

A / AAAA Records

  • 88.198.176.160 ↩ www103.your-server.de

Mail Server IPs

  • 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
  • 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
  • 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.your-server.de postmaster.your-server.de 2026012900 86400 10800 3600000 7200
Primary NS (mname)
ns1.your-server.de
Admin Email (rname)
postmaster@your-server.de
Serial
2026012900
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
7200s

Nameservers (NS)

ns3.second-ns.de
ns.second-ns.com
ns1.your-server.de

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:136.243.93.158 include:spf.protection.outlook.com include:spf.mailjet.com include:one.zoho.eu ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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
  • MS=ms95509327
  • SPFv=spf1 ip4:136.243.93.158 include:spf.protection.outlook.com include:spf.mailjet.com include:one.zoho.eu ~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 n-tu.de

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

No credit card required
Get 1,000 Free Credits