3x1.de

Valid Email Server
Domain Lookup › 3x1.de

Domain Overview

DNS: ✓ 3d ago Checker: ✓ 3d ago
3x1.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-17 23:19:07 UTC · ↺ Refresh

MX Hostnames

  • mx-b.secumail.de
  • mx-a.secumail.de

MX Priorities

  • mx-b.secumail.de: 10
  • mx-a.secumail.de: 10

A / AAAA Records

  • 85.13.134.141 ↩ dd12300.kasserver.com

Mail Server IPs

  • 212.11.224.132 ↩ sc02.secumail.de
  • 212.11.224.154 ↩ sc04.secumail.de
  • 212.11.225.17 ↩ sc03.secumail.de
  • 212.11.225.133 ↩ sc01.secumail.de

SOA Record

Raw SOA ns5.kasserver.com hostmaster.kasserver.com 2603310743 28800 7200 1209600 7200
Primary NS (mname)
ns5.kasserver.com
Admin Email (rname)
hostmaster@kasserver.com
Serial
2603310743
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s

Nameservers (NS)

ns5.kasserver.com
ns6.kasserver.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.secumail.de mx a -all
📊 DNS lookups: 3/10
✓ 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

1 record
  • SPFv=spf1 include:spf.secumail.de mx a -all
Full email verification for 3x1.de

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

SPF / DKIM / DMARC Get 1,000 Free Credits