tu-clausthal.de

Valid Email Server
Domain Lookup › tu-clausthal.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tu-clausthal.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-24 22:08:09 UTC · ↺ Refresh

MX Hostnames

  • a1071.mx.srv.dfn.de
  • c1071.mx.srv.dfn.de
  • b1071.mx.srv.dfn.de

MX Priorities

  • b1071.mx.srv.dfn.de: 10
  • a1071.mx.srv.dfn.de: 10
  • c1071.mx.srv.dfn.de: 10

A / AAAA Records

  • 139.174.33.138 ↩ ad-dcs.rz.tu-clausthal.de
  • 2001:638:605:2021:1::138 (no PTR)

Mail Server IPs

  • 194.95.234.40 ↩ b1071.mx.srv.dfn.de
  • 2001:638:d:c302:acdc:1979:2:9 ↩ b1071.mx.srv.dfn.de
  • 194.95.232.40 ↩ a1071.mx.srv.dfn.de
  • 2001:638:d:c301:acdc:1979:2:9 ↩ a1071.mx.srv.dfn.de
  • 194.95.238.40 ↩ c1071.mx.srv.dfn.de
  • 2001:638:d:c303:acdc:1979:2:9 ↩ c1071.mx.srv.dfn.de

SOA Record

Raw SOA gomorra.rz.tu-clausthal.de hostmaster.tu-clausthal.de 2026032404 10800 3600 604800 10800
Primary NS (mname)
gomorra.rz.tu-clausthal.de
Admin Email (rname)
hostmaster@tu-clausthal.de
Serial
2026032404
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s

Nameservers (NS)

numerobis.rz.tu-clausthal.de
gomorra.rz.tu-clausthal.de
dns-1.dfn.de
sodom.rz.tu-clausthal.de

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.tu-clausthal.de ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 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

7 records
  • SPFv=spf1 include:_spf.tu-clausthal.de ~all
  • adobe-idp-site-verification=38688460cb4ba30bc042ced2430ed03f44270bac41a2a64b21342f9ffb63bb1d
  • atlassian-domain-verification=hDE0/IEe77icGFTKS41l9lsabbyEkPxzY1ba4z10rdbxDu7qtpTiLDp5YEASK18e
  • dell-technologies-domain-verification=tu-clausthal.de_103d37c3-bf9d-416d-8b6a-640a9f01eb88_1702544292
  • ZOOM_verify_lE_-Ou_ISn2nIRLBwqo3ZA
  • google-site-verification=bOtQbT2xPQ-o2c7xCEkBVaFqClmjHIHajL247zmgAzM
  • HARICA-sdePtmQ6dkJtSeFc1jC
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