cortex-media.de

Valid Email Server
Domain Lookup › cortex-media.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cortex-media.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 06:03:25 UTC · ↺ Refresh

MX Hostnames

  • mail.cortex-media.de

MX Priorities

  • mail.cortex-media.de: 10

A / AAAA Records

  • 88.198.238.105 ↩ cere.cortex-media.de
  • 2a01:4f8:120:44ec::105 ↩ cere.cortex-media.de

Mail Server IPs

  • 136.243.217.222 ↩ mail.cortex-media.de
  • 2a01:4f8:212:1cc5::222 ↩ mail.cortex-media.de

SOA Record

Raw SOA ns1.first-ns.de dns.hetzner.com 2026031701 14400 1800 604800 1800
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026031701
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

robotns3.second-ns.com
ns1.first-ns.de
robotns2.second-ns.de

SPF Record

✓ Strict (-all)
v=spf1 mx include:_netblocks1.cortex-media.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; sp=none
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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 include:_netblocks1.cortex-media.de -all
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