ctd-dortmund.de

Valid Email Server
Domain Lookup › ctd-dortmund.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ctd-dortmund.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-24 23:54:11 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 213.160.69.3 (no PTR)

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 ns1.routing.net hostmaster.ctd-dortmund.de 2026011504 3600 3600 86400 900
Primary NS (mname)
ns1.routing.net
Admin Email (rname)
hostmaster@ctd-dortmund.de
Serial
2026011504
Refresh
3600s
Retry
3600s
Expire
86400s
Minimum TTL
900s

Nameservers (NS)

ns1.routing.net
ns3.routing.net
ns2.routing.net

SPF Record

✓ Soft Fail (~all)
v=spf1 mx ip4:87.191.168.122 ip4:217.91.164.182 include:spf.protection.outlook.com include:spf.hornetsecurity.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate 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

3 records
  • apple-domain-verification=FkdpoBZd2znBqEoA
  • SPFv=spf1 mx ip4:87.191.168.122 ip4:217.91.164.182 include:spf.protection.outlook.com include:spf.hornetsecurity.com ~all
  • MS=ms65386492
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