Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stuk-kalender.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 06:08:29 UTC · ↺ Refresh
MX Hostnames
- mail.stuk-kalender.de
MX Priorities
- mail.stuk-kalender.de: 10
A / AAAA Records
- 148.251.139.121 ↩ server2.kvis.de
Mail Server IPs
- 5.9.20.230 ↩ server11.kvis.de
SOA Record
Raw SOA
server2.kvis.de karl.valentin.kvis.de 2026011006 7200 540 604800 3600
Primary NS (mname)
server2.kvis.de
Admin Email (rname)
karl@valentin.kvis.de
Serial
2026011006
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
server1.kvis.de
server2.kvis.de
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
✗ 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 mx a ~all
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