clusterball.de

Valid Email Server
Domain Lookup › clusterball.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
clusterball.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-27 11:29:56 UTC · ↺ Refresh

MX Hostnames

  • mail.clusterball.de

MX Priorities

  • mail.clusterball.de: 110

A / AAAA Records

  • 37.218.255.21 ↩ www.studioserver.de

Mail Server IPs

  • 37.218.255.21 ↩ www.studioserver.de

SOA Record

Raw SOA a.ns14.net poschen.studio311.de 2026011600 43200 14400 604800 43200
Primary NS (mname)
a.ns14.net
Admin Email (rname)
poschen@studio311.de
Serial
2026011600
Refresh
43200s
Retry
14400s
Expire
604800s
Minimum TTL
43200s

Nameservers (NS)

b.ns14.net
d.ns14.net
a.ns14.net
c.ns14.net

SPF Record

✓ Strict (-all)
v=spf1 ip4:37.218.255.21 a:www.studioserver.de mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; adkim=s; aspf=s; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No 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 ip4:37.218.255.21 a:www.studioserver.de mx -all
  • google-site-verification=7viokSSNYvgsNfkUh03OZ4yRKpApP9S7Kh4Gc5UyBSI
Full email verification for clusterball.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits