thk-systems.de

Valid Email Server
Domain Lookup › thk-systems.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
thk-systems.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 11:59:36 UTC · ↺ Refresh

MX Hostnames

  • harold.3des.de
  • mail.3des.de

MX Priorities

  • mail.3des.de: 10
  • harold.3des.de: 10

A / AAAA Records

  • 93.221.55.23 ↩ p5ddd3717.dip0.t-ipconnect.de

Mail Server IPs

  • 45.132.245.22 ↩ mail.3des.de
  • 37.120.187.152 ↩ harold.3des.de

SOA Record

Raw SOA thk-systems.de root.thk-systems.de 1163 86400 28800 604800 600
Primary NS (mname)
thk-systems.de
Admin Email (rname)
root@thk-systems.de
Serial
1163
Refresh
86400s
Retry
28800s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns3.3des.de
ns2.3des.de
ns.3des.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:45.132.245.22 ip4:37.120.187.152 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;pct=100;adkim=r;aspf=r
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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
  • google-site-verification=LwBubvhnBI1DnRaoHAAk-2IuKG1DndFPFtHiFd-5XIo
  • SPFv=spf1 ip4:45.132.245.22 ip4:37.120.187.152 -all
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