Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mbm-konstruktionen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 13:22:55 UTC · ↺ Refresh
MX Hostnames
- mail3.dobler-metallbau.com
MX Priorities
- mail3.dobler-metallbau.com: 10
A / AAAA Records
- 195.253.6.126 ↩ webredir.knipp.de
Mail Server IPs
- 91.106.125.91 ↩ mail3.dobler-metallbau.com
SOA Record
Raw SOA
ns2.knipp.de dnsmaster.irondns.net 2023093006 10800 3000 2419200 900
Primary NS (mname)
ns2.knipp.de
Admin Email (rname)
dnsmaster@irondns.net
Serial
2023093006
Refresh
10800s
Retry
3000s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
ns3.knipp.de
ns2.knipp.de
ns17.knipp.net
SPF Record
✗ Invalid
v=spf1amx-all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.
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=spf1amx-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 mbm-konstruktionen.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits