Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
twk-karlsruhe.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 07:00:51 UTC · ↺ Refresh
MX Hostnames
- mx.twk-karlsruhe.de
MX Priorities
- mx.twk-karlsruhe.de: 5
A / AAAA Records
- 188.64.60.212 (no PTR)
Mail Server IPs
- 85.115.15.250 ↩ mx.twk-karlsruhe.de
SOA Record
Raw SOA
ns.internet1.de dns.internet1.de 2025122902 3600 900 1209600 1800
Primary NS (mname)
ns.internet1.de
Admin Email (rname)
dns@internet1.de
Serial
2025122902
Refresh
3600s
Retry
900s
Expire
1209600s
Minimum TTL
1800s
Nameservers (NS)
ns.internet1.de
ns2.internet1.de
SPF Record
✓ Strict (-all)
v=spf1 mx a a:mx.twk-karlsruhe.de -all
📊 DNS lookups: 4/10
✓ 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
2 records- SPFv=spf1 mx a a:mx.twk-karlsruhe.de -all
- google-site-verification=NJO34Qx3pmdgaKeV3VnPUp2aoKrrluUlZBXdjnkF8u8
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