Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
haus-koester.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 09:21:07 UTC · ↺ Refresh
MX Hostnames
- mail.xsigns10.de
MX Priorities
- mail.xsigns10.de: 10
A / AAAA Records
- 178.63.13.80 ↩ mail.xsigns10.de
Mail Server IPs
- 178.63.13.80 ↩ mail.xsigns10.de
SOA Record
Raw SOA
nsa0.schlundtech.de info.xsigns.de 2026011200 43200 7200 1209600 86400
Primary NS (mname)
nsa0.schlundtech.de
Admin Email (rname)
info@xsigns.de
Serial
2026011200
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsc0.schlundtech.de
nsd0.schlundtech.de
nsa0.schlundtech.de
nsb0.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 a mx -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 a mx -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 haus-koester.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits