sinteo.de

Valid Email Server
Domain Lookup › sinteo.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sinteo.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-01 05:56:13 UTC · ↺ Refresh

MX Hostnames

  • mx2.active24.com
  • mx1.active24.com

MX Priorities

  • mx1.active24.com: 10
  • mx2.active24.com: 20

A / AAAA Records

  • 81.91.86.14

Mail Server IPs

  • 81.95.97.111 ↩ in.smtp.cz
  • 81.95.97.116 ↩ in.smtp.cz
  • 81.95.97.4 ↩ in.smtp.cz
  • 81.95.97.102 ↩ in.smtp.cz
  • 2a02:4a8:ac24:101::97:4 ↩ in.smtp.cz
  • 2a02:4a8:ac24:101::97:102 ↩ in.smtp.cz
  • 2a02:4a8:ac24:101::97:111 ↩ in.smtp.cz
  • 2a02:4a8:ac24:101::97:116 ↩ in.smtp.cz
  • 185.111.90.93 ↩ mx2.active24.com
  • 2a00:4b40:1000:590:185:111:90:93 ↩ mx2.active24.com

SOA Record

Raw SOA alfa.ns.active24.cz hostmaster.active24.cz 2025061802 10800 1800 1209600 3600
Primary NS (mname)
alfa.ns.active24.cz
Admin Email (rname)
hostmaster@active24.cz
Serial
2025061802
Refresh
10800s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

alfa.ns.active24.cz
beta.ns.active24.cz
gama.ns.active24.sk

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

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

No TXT records found.

Full email verification for sinteo.de

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

SPF / DKIM / DMARC Get 1,000 Free Credits