Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
krefeldersteuerberater.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 10:33:17 UTC · ↺ Refresh
MX Hostnames
- mx00.ionos.de
MX Priorities
- mx00.ionos.de: 10
A / AAAA Records
- 217.160.0.235 ↩ 217-160-0-235.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com
Mail Server IPs
- 212.227.15.41 ↩ mx00.kundenserver.de
SOA Record
Raw SOA
ns1063.ui-dns.biz hostmaster.1und1.de 2016082526 28800 7200 604800 300
Primary NS (mname)
ns1063.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.de
Serial
2016082526
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1063.ui-dns.biz
ns1063.ui-dns.com
ns1063.ui-dns.de
ns1063.ui-dns.org
SPF Record
✓ Strict (-all)
v=spf1 a mx a:mrelayeu.kundenserver.de include:_spf-eu.ionos.com -all
📊 DNS lookups: 4/10
✓ 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
2 records- SPFv=spf1 a mx a:mrelayeu.kundenserver.de include:_spf-eu.ionos.com -all
- google-site-verification=-c8zbvcp8hb7cBhBwoUxnfkGz_Tn6fiJHsR3LaFGR2k
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