Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
niederrheintotal.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 10:30:48 UTC · ↺ Refresh
MX Hostnames
- mail.niederrheintotal.de
MX Priorities
- mail.niederrheintotal.de: 10
A / AAAA Records
- 45.136.31.227 ↩ mail.grevenbroichtv.de
- 2a03:4000:49:353::66 ↩ mail.grevenbroichtv.de
Mail Server IPs
- 45.136.31.227 ↩ mail.grevenbroichtv.de
- 2a03:4000:49:353::66 ↩ mail.grevenbroichtv.de
SOA Record
Raw SOA
shades10.rzone.de hostmaster.strato-rz.de 2020051924 86400 7200 604800 300
Primary NS (mname)
shades10.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020051924
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks07.rzone.de
shades10.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:45.136.31.227 ip6:2a03:4000:49:353::66 a mx ptr -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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 ip4:45.136.31.227 ip6:2a03:4000:49:353::66 a mx ptr -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 niederrheintotal.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits