Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
leopold-mueller.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 06:11:27 UTC · ↺ Refresh
MX Hostnames
- mx3.osn.de
- mx2.osn.de
- mx1.osn.de
MX Priorities
- mx1.osn.de: 10
- mx2.osn.de: 20
- mx3.osn.de: 30
A / AAAA Records
- 194.45.27.133 ↩ web02.osn.de
Mail Server IPs
- 194.45.27.124 ↩ mx02.osn.de
- 194.45.27.123 ↩ mx01.osn.de
- 213.241.148.44 ↩ mx03.osn.de
SOA Record
Raw SOA
dns.osn.de root.osn.de 1544541767 14400 3600 1209600 86400
Primary NS (mname)
dns.osn.de
Admin Email (rname)
root@osn.de
Serial
1544541767
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
dns.osn.de
dns.osn.net
dns.osn.org
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
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
No TXT records found.
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