ctmagazin.de

Valid Email Server
Domain Lookup › ctmagazin.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
ctmagazin.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-04 19:20:33 UTC · ↺ Refresh

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MX Hostnames

  • mx02.hornetsecurity.com
  • mx03.hornetsecurity.com
  • mx04.hornetsecurity.com
  • mx01.hornetsecurity.com

MX Priorities

  • mx04.hornetsecurity.com: 40
  • mx01.hornetsecurity.com: 10
  • mx02.hornetsecurity.com: 20
  • mx03.hornetsecurity.com: 30

A / AAAA Records

  • 193.99.144.80 ↩ redirector.heise.de
  • 2a02:2e0:3fe:1001:302:: ↩ redirector.heise.de

Mail Server IPs

  • 94.100.136.7 ↩ mx04.hornetsecurity.com
  • 94.100.132.8 ↩ mx01.hornetsecurity.com
  • 94.100.136.8 ↩ mx02.hornetsecurity.com
  • 94.100.134.8 ↩ mx03.hornetsecurity.com

SOA Record

Raw SOA ns.heise.de hostmaster.heise.de 2024000009 14400 3600 604800 86400
Primary NS (mname)
ns.heise.de
Admin Email (rname)
hostmaster@heise.de
Serial
2024000009
Refresh
14400s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

robotns2.second-ns.de
ns.heise.de

SPF Record

✗ Invalid
v=spf1 -all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=reject; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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
  • MS=ms54031401
  • SPFv=spf1 -all
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