Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
caisson-gmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 14:33:56 UTC · ↺ Refresh
MX Hostnames
- mail.caisson-gmbh.de
MX Priorities
- mail.caisson-gmbh.de: 10
A / AAAA Records
- 185.75.1.74 ↩ caisson-01.technologpark.net
Mail Server IPs
- 128.140.221.8 ↩ srv16308.flexwebhosting.nl
SOA Record
Raw SOA
ns1.flexwebhosting.nl hostmaster.caisson-gmbh.de 2100000035 14400 3600 604800 86400
Primary NS (mname)
ns1.flexwebhosting.nl
Admin Email (rname)
hostmaster@caisson-gmbh.de
Serial
2100000035
Refresh
14400s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns2.anony.nl
ns1.anony.nl
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx a:spf.flexfilter.nl ~all
📊 DNS lookups: 3/10
~ 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 a:spf.flexfilter.nl ~all
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