Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
christophmauler.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 01:05:02 UTC · ↺ Refresh
MX Hostnames
- a.mx.oopen.de
MX Priorities
- a.mx.oopen.de: 10
A / AAAA Records
- 162.55.82.78 ↩ web-01.oopen.de
- 2a01:4f8:271:1266::78 ↩ web-01.oopen.de
Mail Server IPs
- 95.217.204.247 ↩ a.mx.oopen.de
- 2a01:4f9:4a:47e5::247 ↩ a.mx.oopen.de
SOA Record
Raw SOA
a.ns.oopen.de domreg.oopen.de 2024092707 14400 3600 604800 86400
Primary NS (mname)
a.ns.oopen.de
Admin Email (rname)
domreg@oopen.de
Serial
2024092707
Refresh
14400s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
b.ns.oopen.de
a.ns.oopen.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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 a mx ~all
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