uni-duisburg-essen.de

Valid Email Server
Domain Lookup › uni-duisburg-essen.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
uni-duisburg-essen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 11:40:56 UTC · ↺ Refresh

MX Hostnames

  • mx-serv4.uni-due.de
  • mx-serv3.uni-due.de
  • mx-serv5.uni-due.de

MX Priorities

  • mx-serv3.uni-due.de: 10
  • mx-serv5.uni-due.de: 10
  • mx-serv4.uni-due.de: 10

A / AAAA Records

  • 134.91.197.147 ↩ www.uni-essen-duisburg.de

Mail Server IPs

  • 134.91.50.12 ↩ mx-serv3.uni-duisburg-essen.de
  • 134.91.50.16 ↩ mx-serv5.uni-duisburg-essen.de
  • 134.91.50.14 ↩ mx-serv4.uni-due.de

SOA Record

Raw SOA ns1.uni-duisburg-essen.de hostmaster.uni-duisburg-essen.de 2026032504 14400 3600 1209600 10800
Primary NS (mname)
ns1.uni-duisburg-essen.de
Admin Email (rname)
hostmaster@uni-duisburg-essen.de
Serial
2026032504
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s

Nameservers (NS)

dns-2.dfn.de
ns2.uni-duisburg-essen.de
ns1.uni-duisburg-essen.de

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:132.252.0.0/16 ip4:134.91.0.0/16 ip4:193.30.112.1 ip6:2001:638:501::/48 include:_spf.tivian.com include:_spf.zimpel.de include:spf.server-he.de mx ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; sp=none; adkim=r; aspf=r; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

3 records
  • MS=ms85484114
  • SPFv=spf1 ip4:132.252.0.0/16 ip4:134.91.0.0/16 ip4:193.30.112.1 ip6:2001:638:501::/48 include:_spf.tivian.com include:_spf.zimpel.de include:spf.server-he.de mx ~all
  • google-site-verification=E9S1V62qlOZvWXeRdSsMZhIi0I4UuOTCm_FlHSbF0WQ
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 uni-duisburg-essen.de

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

No credit card required
Get 1,000 Free Credits