Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sonnenberg-klinik.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 13:39:31 UTC · ↺ Refresh
MX Hostnames
- mx2.wicker.de
- mx1.wicker.de
MX Priorities
- mx1.wicker.de: 10
- mx2.wicker.de: 20
A / AAAA Records
- 185.166.23.122 ↩ r31959.agenturserver.it
Mail Server IPs
- 62.159.64.227 ↩ mx1.wicker.de
- 78.94.171.243 ↩ mx2.wicker.de
SOA Record
Raw SOA
ns1.first-ns.de hostmaster 2026021800 14400 1800 604800 86400
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
hostmaster
Serial
2026021800
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
robotns3.second-ns.com
ns1.first-ns.de
robotns2.second-ns.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:agenturserver.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
5 records- MS=ms86002386
- apple-domain-verification=hLGVtbGacmAVsZAa
- atlassian-domain-verification=L1nQhnYfrlOox/CzlguOO8i1TrJlFYxnS3wBJKPKVPqXf3pGoMKdNlveuXjkZQtD
- SPFv=spf1 mx include:agenturserver.de -all
- BdkUUiyIgR2opzb5LSCp8F02Oe/ZZi0GnTOD7gHxkOTwhor7bdWLHG1FmMW64GiSnq+sHi4MBfsVKXHH7ICl5Q==
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 sonnenberg-klinik.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits