karl-hornung.de

Valid Email Server
Domain Lookup › karl-hornung.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
karl-hornung.de
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 18:53:10 UTC · ↺ Refresh

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MX Hostnames

  • d302036.b.ess.de.barracudanetworks.com
  • d302036.a.ess.de.barracudanetworks.com

MX Priorities

  • d302036.b.ess.de.barracudanetworks.com: 12
  • d302036.a.ess.de.barracudanetworks.com: 10

A / AAAA Records

  • 93.89.5.150 ↩ wp-reisser.rackspeed-cloud.de

Mail Server IPs

  • 18.185.115.252 ↩ mail.ess.de.barracuda.com
  • 18.185.115.250 ↩ mail.ess.de.barracuda.com
  • 18.185.115.251 ↩ mail.ess.de.barracuda.com

SOA Record

Raw SOA ns.rackspeed-cloud.de 2ndlevel.rackspeed.de 2026020200 3600 1800 1209600 86400
Primary NS (mname)
ns.rackspeed-cloud.de
Admin Email (rname)
2ndlevel@rackspeed.de
Serial
2026020200
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns.rackspeed-cloud.de
ns.rackspeed-cloud.com
ns.rackspeed-cloud.eu

SPF Record

✓ Strict (-all)
v=spf1 ip4:93.89.5.150 ip4:217.243.222.100 ip4:176.94.174.107 ip4:91.194.222.5 ip4:88.79.217.5 include:spf.ecofis.de include:_spf.senders.scnem.com include:spf.protection.outlook.com include:spf.ess.de.barracudanetworks.com a:mail.sct.de include:spf.go-2b-planer.de include:_spf.eu.mailgun.org -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 ip4:93.89.5.150 ip4:217.243.222.100 ip4:176.94.174.107 ip4:91.194.222.5 ip4:88.79.217.5 include:spf.ecofis.de include:_spf.senders.scnem.com include:spf.protection.outlook.com include:spf.ess.de.barracudanetworks.com a:mail.sct.de include:spf.go-2b-planer.de include:_spf.eu.mailgun.org -all
  • MS=ms73031595
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