Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
michael-arlt.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 03:18:27 UTC · ↺ Refresh
MX Hostnames
- cb-host.de
MX Priorities
- cb-host.de: 10
A / AAAA Records
- 217.172.177.44 ↩ cb-host.de
Mail Server IPs
- 217.172.177.44 ↩ cb-host.de
SOA Record
Raw SOA
nsa4.schlundtech.de webmaster.cb-host.de 2024071900 43200 7200 1209600 86400
Primary NS (mname)
nsa4.schlundtech.de
Admin Email (rname)
webmaster@cb-host.de
Serial
2024071900
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsb4.schlundtech.de
nsc4.schlundtech.de
nsd4.schlundtech.de
nsa4.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ 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 -all
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