guhdo.de

Valid Email Server
Domain Lookup › guhdo.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
guhdo.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-29 22:33:40 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 185.181.132.17 ↩ r32095.agenturserver.it

Mail Server IPs

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

SOA Record

Raw SOA ns01.1blu.de hostmaster.1blu.de 2026031101 43200 5400 604800 14400
Primary NS (mname)
ns01.1blu.de
Admin Email (rname)
hostmaster@1blu.de
Serial
2026031101
Refresh
43200s
Retry
5400s
Expire
604800s
Minimum TTL
14400s

Nameservers (NS)

ns02.1blu.de
ns01.1blu.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ptr include:spf.hornetsecurity.com ip4:178.254.4.101 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict 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

1 record
  • SPFv=spf1 a mx ptr include:spf.hornetsecurity.com ip4:178.254.4.101 -all
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