th-luebeck.de

Valid Email Server
Domain Lookup › th-luebeck.de

Domain Overview

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

Checked via [email protected] · 2026-03-25 00:36:12 UTC · ↺ Refresh

MX Hostnames

  • c2471.mx.srv.dfn.de
  • b2471.mx.srv.dfn.de
  • a2471.mx.srv.dfn.de

MX Priorities

  • c2471.mx.srv.dfn.de: 10
  • b2471.mx.srv.dfn.de: 10
  • a2471.mx.srv.dfn.de: 10

A / AAAA Records

  • 193.175.120.221 ↩ gast-wlan.th-luebeck.de

Mail Server IPs

  • 194.95.238.214 ↩ c2471.mx.srv.dfn.de
  • 2001:638:d:c303:acdc:1979:2:bc ↩ c2471.mx.srv.dfn.de
  • 194.95.234.214 ↩ b2471.mx.srv.dfn.de
  • 2001:638:d:c302:acdc:1979:2:bc ↩ b2471.mx.srv.dfn.de
  • 194.95.232.214 ↩ a2471.mx.srv.dfn.de
  • 2001:638:d:c301:acdc:1979:2:bc ↩ a2471.mx.srv.dfn.de

SOA Record

Raw SOA dns.fh-luebeck.de netzadmin.fh-luebeck.de 2026032403 14400 1800 1209600 3600
Primary NS (mname)
dns.fh-luebeck.de
Admin Email (rname)
netzadmin@fh-luebeck.de
Serial
2026032403
Refresh
14400s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

dns.fh-luebeck.de
dns-3.dfn.de
dns-1.dfn.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:193.175.120.112/30 ip6:2001:638:707:5::0/64 ip4:193.175.120.192/26 ip6:2001:638:707:10::0/64 ip4:193.175.120.16/28 ip4:193.175.120.98/32 ip4:217.113.45.225/32 ip6:2a02:ea2:c101:1::25:200/128 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;sp=reject;adkim=r;aspf=r;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1;pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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

5 records
  • adobe-idp-site-verification=794219687a29c98f5928d3ffc94f1868352f5471d2da74d0fadd5036913e99ee
  • MS=ms36163469
  • google-site-verification=SiJwlOnbH15qS8mwglO7BnEBTfebD3mYqD9DqzMxfIY
  • SPFv=spf1 ip4:193.175.120.112/30 ip6:2001:638:707:5::0/64 ip4:193.175.120.192/26 ip6:2001:638:707:10::0/64 ip4:193.175.120.16/28 ip4:193.175.120.98/32 ip4:217.113.45.225/32 ip6:2a02:ea2:c101:1::25:200/128 -all
  • google-site-verification=MA_7CpYWg35wKYDUcv1DyFgq_9h5Dcz9TkrVIAcNyyo
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for th-luebeck.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits