tu-chemnitz.de

Valid Email Server
Domain Lookup › tu-chemnitz.de

Domain Overview

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

Checked via [email protected] · 2026-03-28 08:06:31 UTC · ↺ Refresh

MX Hostnames

  • kyle.hrz.tu-chemnitz.de
  • ezra.hrz.tu-chemnitz.de

MX Priorities

  • kyle.hrz.tu-chemnitz.de: 1
  • ezra.hrz.tu-chemnitz.de: 1

A / AAAA Records

  • 134.109.133.7 ↩ cgi.tu-chemnitz.de
  • 2001:638:911:b01:134:109:133:7 ↩ cgi.tu-chemnitz.de

Mail Server IPs

  • 134.109.228.103 ↩ kyle.hrz.tu-chemnitz.de
  • 2001:638:911:b0e:134:109:228:103 ↩ kyle.hrz.tu-chemnitz.de
  • 134.109.228.86 ↩ ezra.hrz.tu-chemnitz.de
  • 2001:638:911:b0e:134:109:228:86 ↩ ezra.hrz.tu-chemnitz.de

SOA Record

Raw SOA ceres.hrz.tu-chemnitz.de hostmaster.tu-chemnitz.de 2021631570 10800 3600 2419200 3600
Primary NS (mname)
ceres.hrz.tu-chemnitz.de
Admin Email (rname)
hostmaster@tu-chemnitz.de
Serial
2021631570
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

dns-3.dfn.de
ceres.hrz.tu-chemnitz.de
secondary.rrze.uni-erlangen.de
eris.hrz.tu-chemnitz.de

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:134.109.229.63 ip4:134.109.229.193 ip6:2001:638:911:b0e:134:109:229:63 ip6:2001:638:911:b0e:134:109:229:193 include:_spf.o155.mx.srv.dfn.de ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

2 records
  • SPFv=spf1 ip4:134.109.229.63 ip4:134.109.229.193 ip6:2001:638:911:b0e:134:109:229:63 ip6:2001:638:911:b0e:134:109:229:193 include:_spf.o155.mx.srv.dfn.de ~all
  • google-site-verification=5XIMxbUxIRiPJF7IuWJWFq3TVhk-h8nQZ8aW_OqkPO8
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