Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
otb-judo.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 03:28:48 UTC · ↺ Refresh
MX Hostnames
- spamfilter.webjanssen.de
- spamefa.webjanssen.de
MX Priorities
- spamfilter.webjanssen.de: 10
- spamefa.webjanssen.de: 30
A / AAAA Records
- 195.225.209.77 ↩ wj77.webjanssen.de
Mail Server IPs
- 195.225.209.185 ↩ spamfilter.webjanssen.de
- 195.225.209.186 ↩ spamefa.webjanssen.de
SOA Record
Raw SOA
ns1.janssen-s1.de 2019111202 4294967295 10800 3600 604800 3600
Primary NS (mname)
ns1.janssen-s1.de
Admin Email (rname)
2019111202
Serial
4294967295
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.janssen-s1.de
ns1.janssen-s1.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:webjanssen.de ~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 a mx include:webjanssen.de ~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 otb-judo.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits