hs-karlsruhe.de

Valid Email Server
Domain Lookup › hs-karlsruhe.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
hs-karlsruhe.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 18:50:14 UTC · ↺ Refresh

MX Hostnames

  • smtp.hs-karlsruhe.de

MX Priorities

  • smtp.hs-karlsruhe.de: 9

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 193.196.64.25 ↩ smtp.HS-Karlsruhe.DE

SOA Record

Raw SOA rz01.hs-karlsruhe.de hostmaster.hs-karlsruhe.de 2026040318 21600 1800 2419200 86400
Primary NS (mname)
rz01.hs-karlsruhe.de
Admin Email (rname)
hostmaster@hs-karlsruhe.de
Serial
2026040318
Refresh
21600s
Retry
1800s
Expire
2419200s
Minimum TTL
86400s

Nameservers (NS)

dns3.belwue.de
dns1.belwue.de
rz01.hs-karlsruhe.de

SPF Record

✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict 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

2 records
  • SPFv=spf1 mx -all
  • HARICA-p0znlthmuMxY7WctSqm
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 hs-karlsruhe.de

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

No credit card required
Get 1,000 Free Credits