calcis.de

Valid Email Server
Domain Lookup › calcis.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
calcis.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-04 22:12:38 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 134.119.225.191 ↩ mc21819.ispgateway.de
  • 2a00:1158:400:407::3bf (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 a.dns-i.net hostmaster.insyst.de 2021021386 28800 7200 1209600 1800
Primary NS (mname)
a.dns-i.net
Admin Email (rname)
hostmaster@insyst.de
Serial
2021021386
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
1800s

Nameservers (NS)

b.dns-i.net
a.dns-i.net
c.dns-i.net

SPF Record

✓ Soft Fail (~all)
v=spf1 a include:spf.insyst.de include:spf.protection.outlook.com include:spf.hornetsecurity.com ~all
📊 DNS lookups: 4/10
~ 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
  • SPFv=spf1 a include:spf.insyst.de include:spf.protection.outlook.com include:spf.hornetsecurity.com ~all
  • _globalsign-domain-verification=n8kajEKwNYlknBRSIlieHciYoqVz8oPIX-Cswi0FID
  • oNqAKO9D7iv4gA1ArEgSSF7QS0UoMmwN
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