uni-osnabrueck.de

Valid Email Server
Domain Lookup › uni-osnabrueck.de

Domain Overview

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

Checked via [email protected] · 2026-03-27 11:51:54 UTC · ↺ Refresh

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MX Hostnames

  • a2411.mx.srv.dfn.de
  • b2411.mx.srv.dfn.de
  • c2411.mx.srv.dfn.de

MX Priorities

  • a2411.mx.srv.dfn.de: 60
  • c2411.mx.srv.dfn.de: 60
  • b2411.mx.srv.dfn.de: 60

A / AAAA Records

  • 131.173.17.203 ↩ t3prod4g.rz.uni-osnabrueck.de
  • 2001:638:508:100::83ad:11cb ↩ t3prod4g.rz.uni-osnabrueck.de

Mail Server IPs

  • 194.95.232.204 ↩ a2411.mx.srv.dfn.de
  • 2001:638:d:c301:acdc:1979:2:b2 ↩ a2411.mx.srv.dfn.de
  • 194.95.238.204 ↩ c2411.mx.srv.dfn.de
  • 2001:638:d:c303:acdc:1979:2:b2 ↩ c2411.mx.srv.dfn.de
  • 194.95.234.204 ↩ b2411.mx.srv.dfn.de
  • 2001:638:d:c302:acdc:1979:2:b2 ↩ b2411.mx.srv.dfn.de

SOA Record

Raw SOA dns-1.serv.uni-osnabrueck.de dnsadmin.uni-osnabrueck.de 767911604 3602 1802 1209600 1202
Primary NS (mname)
dns-1.serv.uni-osnabrueck.de
Admin Email (rname)
dnsadmin@uni-osnabrueck.de
Serial
767911604
Refresh
3602s
Retry
1802s
Expire
1209600s
Minimum TTL
1202s

Nameservers (NS)

dns-1.serv.uni-osnabrueck.de
dns-3.serv.uni-osnabrueck.de
dns-2.serv.uni-osnabrueck.de

SPF Record

✓ Strict (-all)
v=spf1 mx include:uni-pur.spf-incl.uni-osnabrueck.de include:dez6-add.spf-incl.uni-osnabrueck.de include:spf.mailsupport.dfn.de -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict 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

✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

5 records
  • SPFv=spf1 mx include:uni-pur.spf-incl.uni-osnabrueck.de include:dez6-add.spf-incl.uni-osnabrueck.de include:spf.mailsupport.dfn.de -all
  • google-site-verification=J3ZwOfNa3q_gqnhQ0pjG2ItIweptYl4teLM1cfFISMg
  • brevo-code:8be95397c5b7b7d63d03554f1a3020af
  • MS=F7AB0550ED5397BE998EB88CBD0E5F82D6851A62
  • google-gws-recovery-domain-verification=65368653
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