Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
osinski.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 03:32:41 UTC · ↺ Refresh
MX Hostnames
- mail.osinski.de
MX Priorities
- mail.osinski.de: 10
A / AAAA Records
- 85.214.12.56 ↩ host.os-host.de
Mail Server IPs
- 85.214.12.56 ↩ host.os-host.de
SOA Record
Raw SOA
ns1.os-host.de ns2.os-host.de 2016061600 3600 901 1209600 86400
Primary NS (mname)
ns1.os-host.de
Admin Email (rname)
ns2@os-host.de
Serial
2016061600
Refresh
3600s
Retry
901s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns4.os-host.de
ns1.os-host.de
ns3.os-host.de
ns2.os-host.de
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +a:host.os-host.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
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
1 record- SPFv=spf1 +a +mx +a:host.os-host.de -all
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