Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kalk-kontor.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 21:44:14 UTC · ↺ Refresh
MX Hostnames
- onmail01.oevermann.de
- mr05.oevermann.de
MX Priorities
- mr05.oevermann.de: 20
- onmail01.oevermann.de: 10
A / AAAA Records
- 185.60.251.251 (no PTR)
Mail Server IPs
- 83.138.60.116 ↩ mr05.oevermann.de
- 193.26.15.25 ↩ onmail01.oevermann.de
SOA Record
Raw SOA
ns01.ondns.de dns-admin.oevermann.de 2023062801 28800 7200 2419200 3600
Primary NS (mname)
ns01.ondns.de
Admin Email (rname)
dns-admin@oevermann.de
Serial
2023062801
Refresh
28800s
Retry
7200s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
ns01.ondns.de
ns02.ondns.eu
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a include:_spf.on.services ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate 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
1 record- SPFv=spf1 mx a include:_spf.on.services ~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 · Customize →
See demo & docs
Deep verification
Full email verification for kalk-kontor.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits