uni-luebeck.de

Valid Email Server
Domain Lookup › uni-luebeck.de

Domain Overview

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

Checked via [email protected] · 2026-03-28 12:46:24 UTC · ↺ Refresh

MX Hostnames

  • ip3.rz.uni-luebeck.de
  • ip1.rz.uni-luebeck.de
  • ip2.rz.uni-luebeck.de

MX Priorities

  • ip1.rz.uni-luebeck.de: 10
  • ip3.rz.uni-luebeck.de: 10
  • ip2.rz.uni-luebeck.de: 10

A / AAAA Records

  • 141.83.104.233 (no PTR)

Mail Server IPs

  • 141.83.100.71 ↩ ip1.rz.uni-luebeck.de
  • 141.83.100.74 ↩ ip3.rz.uni-luebeck.de
  • 141.83.100.72 ↩ ip2.rz.uni-luebeck.de

SOA Record

Raw SOA dns01.uni-luebeck.de hostmaster.uni-luebeck.de 2026032604 43200 36000 604800 86400
Primary NS (mname)
dns01.uni-luebeck.de
Admin Email (rname)
hostmaster@uni-luebeck.de
Serial
2026032604
Refresh
43200s
Retry
36000s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

dns01.uni-luebeck.de
dns02.uni-luebeck.de
deneb.dfn.de

SPF Record

✓ Strict (-all)
v=spf1 +mx ip4:141.83.100.71/32 ip4:141.83.100.72/32 ip4:141.83.100.74/32 ip4:141.83.100.70/32 ip4:141.83.100.95/32 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

8 records
  • HARICA-kb221nFJyT7poiyqKO0
  • google-site-verification=Q2TqXP3rH_lG9HutkGjsGiWZ8gLZcqard4TJH3-Ciu0
  • _telesec-domain-validation=342549_2025-11-17_0avRBStwKakztrsVUsWy6YDlKkgMuqReCtMVGgmetUq2gSIG2h
  • MS=ms72522114
  • abuseipdb-verification=i64mBn4m
  • duo_sso_verification=AsJZA51NXp3m7VxmYqOwIN7uFiPlnbDpfXhqx9CUu224NpkGpDrzS4ltcUZJUoe4
  • ciscocidomainverification=a99ff3d68626e857357c48d957a15b58ec4fadf87dda4c4db1f1d692215d27d
  • SPFv=spf1 +mx ip4:141.83.100.71/32 ip4:141.83.100.72/32 ip4:141.83.100.74/32 ip4:141.83.100.70/32 ip4:141.83.100.95/32 -all
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