Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dres-luhrenberg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 18:54:52 UTC · ↺ Refresh
MX Hostnames
- mail.dres-luhrenberg.de
MX Priorities
- mail.dres-luhrenberg.de: 10
A / AAAA Records
- 178.254.15.58 ↩ sh-72.1blu.de
Mail Server IPs
- 178.254.4.101 ↩ ms-10.1blu.de
SOA Record
Raw SOA
ns01.1blu.de hostmaster.1blu.de 2025011601 43200 5400 604800 14400
Primary NS (mname)
ns01.1blu.de
Admin Email (rname)
hostmaster@1blu.de
Serial
2025011601
Refresh
43200s
Retry
5400s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
ns01.1blu.de
ns02.1blu.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:_spf.1blu.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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 include:_spf.1blu.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 dres-luhrenberg.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits