uni-due.de

Valid Email Server
Domain Lookup › uni-due.de

Domain Overview

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

Checked via [email protected] · 2026-03-23 04:34:25 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 134.91.197.147 ↩ uni-duisburg-essen.de

Mail Server IPs

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

SOA Record

Raw SOA ns1.uni-duisburg-essen.de netadm.uni-duisburg-essen.de 2026032000 14400 3600 1209600 10800
Primary NS (mname)
ns1.uni-duisburg-essen.de
Admin Email (rname)
netadm@uni-duisburg-essen.de
Serial
2026032000
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s

Nameservers (NS)

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

4 records
  • MS=D42AE4BAA7D47D587275500686025E3907354F80
  • 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=ao6bsU-PynQ0nGziXEU2rkcGKh1_DBnALmHLmdZv6uo
  • apple-domain-verification=t3JfgbmXeFvCVwKO
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