historiker.at

Valid Email Server

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
historiker.at
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-11-10 14:21:36 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

  • mx01.hornetsecurity.com: 5
  • mx02.hornetsecurity.com: 10
  • mx03.hornetsecurity.com: 15
  • mx04.hornetsecurity.com: 20

A / AAAA Records

  • 172.67.202.53 (no PTR)
  • 104.21.14.21 (no PTR)
  • 2606:4700:3035::6815:e15 (no PTR)
  • 2606:4700:3035::ac43:ca35 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA chad.ns.cloudflare.com dns.cloudflare.com 2414797121 10000 2400 604800 1800
Primary NS (mname)
chad.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2414797121
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

raina.ns.cloudflare.com
chad.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.sendinblue.com include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf.antispamcloud.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;sp=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=r;fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

DKIM Selectors

✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

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

All TXT Records

5 records
  • MS=ms54508897
  • brevo-code:3f64365182f520543d421e8d24fe45d1
  • brevo-code:b551b000c94c263ccf40607e0a5f015e
  • google-site-verification=DQ0wyfPdqxieBs2uuJIohWNcYtT32KYSIpI8GxpOO54
  • SPFv=spf1 include:spf.sendinblue.com include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf.antispamcloud.com ~all
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