Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kastorp.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 19:43:58 UTC · ↺ Refresh
MX Hostnames
- mail.kastorp.de
MX Priorities
- mail.kastorp.de: 10
A / AAAA Records
- 92.60.36.28 ↩ mail.serverkun.de
Mail Server IPs
- 92.60.36.28 ↩ mail.serverkun.de
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2025042101 28800 7200 1209600 86400
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2025042101
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
second-dns.netcup.net
third-dns.netcup.net
root-dns.netcup.net
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 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
2 records- google-site-verification=RY_O91j1A8RWz7cryyes3lXIdKW6_CdN5Bu6wBDLlf4
- SPFv=spf1 mx a ~all
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