Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
biehl-gruppe.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 14:04:14 UTC · ↺ Refresh
MX Hostnames
- biehl-gruppe.de
MX Priorities
- biehl-gruppe.de: 10
A / AAAA Records
- 46.229.46.166 ↩ d167.x-mailer.de
Mail Server IPs
- 46.229.46.166 ↩ d167.x-mailer.de
SOA Record
Raw SOA
ns3.nsentry.de hostmaster.biehl-gruppe.de 0 86400 7200 3600000 172800
Primary NS (mname)
ns3.nsentry.de
Admin Email (rname)
hostmaster@biehl-gruppe.de
Serial
0
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
172800s
Nameservers (NS)
ns4.nsentry.de
ns3.nsentry.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:d167.x-mailer.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx include:d167.x-mailer.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 biehl-gruppe.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits