hcu-hamburg.de

Valid Email Server
Domain Lookup › hcu-hamburg.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
hcu-hamburg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 19:47:16 UTC · ↺ Refresh

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MX Hostnames

  • smtp4.rz.tu-harburg.de
  • smtp5.rz.tu-harburg.de
  • smtp3.rz.tu-harburg.de

MX Priorities

  • smtp5.rz.tu-harburg.de: 15
  • smtp4.rz.tu-harburg.de: 5
  • smtp3.rz.tu-harburg.de: 25

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 134.28.205.35 ↩ smtp5.rz.tu-harburg.de
  • 2001:638:702:20aa::205:35 ↩ smtp5.rz.tu-harburg.de
  • 134.28.205.34 ↩ smtp4.rz.tu-harburg.de
  • 2001:638:702:20aa::205:34 ↩ smtp4.rz.tu-harburg.de
  • 134.28.205.37 ↩ smtp3.rz.tu-harburg.de
  • 2001:638:702:20aa::205:37 ↩ smtp3.rz.tu-harburg.de

SOA Record

Raw SOA ns01.hcu-hamburg.de it-support.hcu-hamburg.de 2032001139 21600 3600 1209600 600
Primary NS (mname)
ns01.hcu-hamburg.de
Admin Email (rname)
it-support@hcu-hamburg.de
Serial
2032001139
Refresh
21600s
Retry
3600s
Expire
1209600s
Minimum TTL
600s

Nameservers (NS)

ns01.hcu-hamburg.de
dns-2.dfn.de
ns02.hcu-hamburg.de

SPF Record

✓ Soft Fail (~all)
v=spf1 a:mailgate01.hcuhh.de a:mailgate02.hcuhh.de include:_spf.tu-harburg.de
📊 DNS lookups: 3/10

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
  • SPFv=spf1 a:mailgate01.hcuhh.de a:mailgate02.hcuhh.de include:_spf.tu-harburg.de
  • MS=ms96064425
  • ZOOM_verify_SO5dw5x3SuWSW8hlDjcYtQ
  • HARICA-CgJH7lHHiadn7ZfxdO4
  • autodesk-domain-verification=KvPChatKcrqwYxseMsbf
  • adobe-idp-site-verification=b9b1a330e0b66eeb8587693dff9db2ca2e9b56f3affa3079969667e0ec9e60fe
  • apple-domain-verification=t2uHFo2blutLd9CG
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