praeparation.de

Valid Email Server
Domain Lookup › praeparation.de

Domain Overview

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

Checked via [email protected] · 2026-04-01 16:26:01 UTC · ↺ Refresh

MX Hostnames

  • bender.tux4web.de
  • zoidberg.tux4web.de
  • fry.tux4web.de

MX Priorities

  • bender.tux4web.de: 20
  • fry.tux4web.de: 10
  • zoidberg.tux4web.de: 20

A / AAAA Records

  • 195.253.4.247 ↩ fry.tux4web.de

Mail Server IPs

  • 78.94.7.242 ↩ bender.tux4web.de
  • 195.253.4.247 ↩ fry.tux4web.de
  • 173.212.232.231 ↩ zoidberg.tux4web.de

SOA Record

Raw SOA ns1.tux4web.de hostmaster.tux4web.de 1772530777 21600 3600 604800 3600
Primary NS (mname)
ns1.tux4web.de
Admin Email (rname)
hostmaster@tux4web.de
Serial
1772530777
Refresh
21600s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns3.tux4web.de
ns2.tux4web.de
ns1.tux4web.de

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:195.253.4.136/29 ip4:195.253.4.240/28 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

1 record
  • SPFv=spf1 mx ip4:195.253.4.136/29 ip4:195.253.4.240/28 -all
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