l3s.de

Valid Email Server
Domain Lookup › l3s.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
l3s.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-02 19:43:42 UTC · ↺ Refresh

MX Hostnames

  • a1122.mx.srv.dfn.de
  • b1122.mx.srv.dfn.de
  • c1122.mx.srv.dfn.de

MX Priorities

  • b1122.mx.srv.dfn.de: 10
  • a1122.mx.srv.dfn.de: 10
  • c1122.mx.srv.dfn.de: 10

A / AAAA Records

  • 130.75.87.3 ↩ l3s.de

Mail Server IPs

  • 194.95.234.59 ↩ b1122.mx.srv.dfn.de
  • 194.95.232.59 ↩ a1122.mx.srv.dfn.de
  • 194.95.238.59 ↩ c1122.mx.srv.dfn.de

SOA Record

Raw SOA ipam.uni-hannover.de hostmaster.uni-hannover.de 1505920141 10800 3600 2419200 900
Primary NS (mname)
ipam.uni-hannover.de
Admin Email (rname)
hostmaster@uni-hannover.de
Serial
1505920141
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s

Nameservers (NS)

ns3.uni-hannover.de
ns1.uni-hannover.de
ns2.uni-hannover.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:130.75.2.97 ip4:130.75.2.98 ip4:130.75.2.99 ip4:130.75.2.102 ip4:130.75.2.117 ip4:130.75.2.116 ip4:130.75.2.109 ip4:130.75.2.115 ip4:130.75.2.114 ip4:130.75.2.110 ip4:130.75.2.107 ip4:130.75.2.113 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;sp=none;ruf=mailto:[email protected];rua=mailto:[email protected];aspf=r;adkim=r
⚠ 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
  • brevo-code:998002b13e86a83ea1deea98e0835ab0
  • Forschungszentrum L3S
  • MS=ms80574787
  • SPFv=spf1 a mx ip4:130.75.2.97 ip4:130.75.2.98 ip4:130.75.2.99 ip4:130.75.2.102 ip4:130.75.2.117 ip4:130.75.2.116 ip4:130.75.2.109 ip4:130.75.2.115 ip4:130.75.2.114 ip4:130.75.2.110 ip4:130.75.2.107 ip4:130.75.2.113 -all
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