Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
marplon4.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 02:41:22 UTC · ↺ Refresh
MX Hostnames
- mail.marplon4.de
MX Priorities
- mail.marplon4.de: 20
A / AAAA Records
- 83.223.85.140 ↩ nweb.duplox.org
- 2a01:30::13:5054:ff:aea7:1ab1 ↩ nweb.duplox.org
Mail Server IPs
- 83.223.83.219 ↩ mail.duplox.org
SOA Record
Raw SOA
icon.mind.de hostmaster.icon.mind.de 2014010301 86400 7200 604800 86400
Primary NS (mname)
icon.mind.de
Admin Email (rname)
hostmaster@icon.mind.de
Serial
2014010301
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
icon.mind.de
dns1.isp-eg.de
dns2.mind.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.sinma.de ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100; ri=8640000
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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 include:_spf.sinma.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 marplon4.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits