ku.de

Valid Email Server
Domain Lookup › ku.de

Domain Overview

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

Checked via [email protected] · 2026-04-02 01:36:34 UTC · ↺ Refresh

MX Hostnames

  • c1041.mx.srv.dfn.de
  • b1041.mx.srv.dfn.de
  • a1041.mx.srv.dfn.de

MX Priorities

  • c1041.mx.srv.dfn.de: 10
  • b1041.mx.srv.dfn.de: 10
  • a1041.mx.srv.dfn.de: 10

A / AAAA Records

  • 141.78.7.198 ↩ sr-dell-r440d.ku.de

Mail Server IPs

  • 194.95.238.37 ↩ c1041.mx.srv.dfn.de
  • 194.95.234.37 ↩ b1041.mx.srv.dfn.de
  • 194.95.232.37 ↩ a1041.mx.srv.dfn.de

SOA Record

Raw SOA ns.ku.de netzadm.ku.de 202611545 21600 3600 3600000 86400
Primary NS (mname)
ns.ku.de
Admin Email (rname)
netzadm@ku.de
Serial
202611545
Refresh
21600s
Retry
3600s
Expire
3600000s
Minimum TTL
86400s

Nameservers (NS)

dns-3.dfn.de
ns.ku.de
ns3.rrze.uni-erlangen.de
dns-1.dfn.de

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:141.78.0.0/18 ip4:141.78.64.0/19 ip4:141.78.96.0/22 ip4:141.78.104.0/21 ip4:141.78.112.0/20 ip4:141.78.192.0/18 a:bvbvxmail.bib-bvb.de a:mailer02.zib.de ip4:5.9.79.165 ip4:159.69.247.208 ip4:23.88.47.24 ip4:142.132.185.29 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

7 records
  • facebook-domain-verification=86dqwz7qhtmht0hpynl65cfdh5mf29
  • apple-domain-verification=497qMZv7r5v1n6iC
  • google-site-verification=eUCVOD4Wmcs9961Pt65s-V8hmv8RPY2D2j-0EGhVhPw
  • google-site-verification=or3zmlmQAEZd_z3cUDTm23MXGZF0XdOvUdieC-hVzIU
  • SPFv=spf1 ip4:141.78.0.0/18 ip4:141.78.64.0/19 ip4:141.78.96.0/22 ip4:141.78.104.0/21 ip4:141.78.112.0/20 ip4:141.78.192.0/18 a:bvbvxmail.bib-bvb.de a:mailer02.zib.de ip4:5.9.79.165 ip4:159.69.247.208 ip4:23.88.47.24 ip4:142.132.185.29 ~all
  • MS=FFD6B770542665E4F0A14DC1F7F5199DB1ED3075
  • adobe-idp-site-verification=d4cdce37079df62376fd999e8025c400e1940edaa74fe99ddeeab8d8b5d99729
Full email verification for ku.de

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