Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
duenkel-partner.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 21:41:42 UTC · ↺ Refresh
MX Hostnames
- mail.mailfd21.de
- mail.duenkel-partner.de
MX Priorities
- mail.mailfd21.de: 2
- mail.duenkel-partner.de: 5
A / AAAA Records
- 95.216.197.192 ↩ static.192.197.216.95.clients.your-server.de
- 2a01:4f9:c011:bdc7::1 (no PTR)
Mail Server IPs
- 65.21.111.147 ↩ mail.mailfd21.de
- 2a01:4f9:c010:4ae4::1 ↩ mail.mailfd21.de
- 88.198.58.235 ↩ static.88-198-58-235.clients.your-server.de
SOA Record
Raw SOA
ns1.first-ns.de dns.hetzner.com 2025121000 14400 1800 604800 300
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2025121000
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1.first-ns.de
robotns2.second-ns.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:maildomain._spf.datev.de ?all
📊 DNS lookups: 3/10
? Neutral (?all) — no 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
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 a mx include:maildomain._spf.datev.de ?all
- MS=181BFADEF4D706AF1394A0779400856EAFBA322E
- MS=DA5824A6F160F5A1F5128282D44A558C31402253
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 duenkel-partner.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits