dkfz-heidelberg.de

Valid Email Server
Domain Lookup › dkfz-heidelberg.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
dkfz-heidelberg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-24 22:19:16 UTC · ↺ Refresh

MX Hostnames

  • a1202.mx.srv.dfn.de
  • b1202.mx.srv.dfn.de
  • c1202.mx.srv.dfn.de

MX Priorities

  • c1202.mx.srv.dfn.de: 10
  • a1202.mx.srv.dfn.de: 10
  • b1202.mx.srv.dfn.de: 10

A / AAAA Records

  • 192.54.49.124 ↩ www100.inet.dkfz-heidelberg.de

Mail Server IPs

  • 194.95.239.71 ↩ c1202.mx.srv.dfn.de
  • 2001:638:d:c303:acdc:1979:2:ff ↩ c1202.mx.srv.dfn.de
  • 194.95.233.71 ↩ a1202.mx.srv.dfn.de
  • 2001:638:d:c301:acdc:1979:2:ff ↩ a1202.mx.srv.dfn.de
  • 194.95.235.71 ↩ b1202.mx.srv.dfn.de
  • 2001:638:d:c302:acdc:1979:2:ff ↩ b1202.mx.srv.dfn.de

SOA Record

Raw SOA ns-ext.inet.dkfz-heidelberg.de hostmaster.dkfz-heidelberg.de 2026032405 10800 1800 3600000 300
Primary NS (mname)
ns-ext.inet.dkfz-heidelberg.de
Admin Email (rname)
hostmaster@dkfz-heidelberg.de
Serial
2026032405
Refresh
10800s
Retry
1800s
Expire
3600000s
Minimum TTL
300s

Nameservers (NS)

ns-ext.inet.dkfz-heidelberg.de
dns1.belwue.de
deneb.dfn.de

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:193.174.53.133 ip4:193.174.53.139 ip4:192.54.49.106 ip4:192.108.23.51 ip4:192.108.23.50 mx ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;sp=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];fo=0:1:d:s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

6 records
  • MS=ms83308492
  • HARICA-mP0p1P73JsjpCDdp5H8
  • asv=f04daf0f38e3bec94ec2015393c2271e
  • swisssign-check=c8BYNay3ERtn0KUUv3zjk_TAK7o
  • atlassian-domain-verification=ZxYgMNd3krkEydT6goP83NFso8ZgZfpDJo1VMqPNNRVkFArh7rNdJpUqOzWfq7aA
  • SPFv=spf1 ip4:193.174.53.133 ip4:193.174.53.139 ip4:192.54.49.106 ip4:192.108.23.51 ip4:192.108.23.50 mx ~all
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 dkfz-heidelberg.de

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

No credit card required
Get 1,000 Free Credits