hc24.de

Valid Email Server
Domain Lookup › hc24.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
hc24.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-19 12:39:27 UTC · ↺ Refresh

MX Hostnames

  • hc24-de.mail.protection.outlook.com
  • mxlb.ispgateway.de
  • mxlbpu.ispgateway.de

MX Priorities

  • hc24-de.mail.protection.outlook.com: 100
  • mxlbpu.ispgateway.de: 20
  • mxlb.ispgateway.de: 10

A / AAAA Records

  • 92.205.176.16

Mail Server IPs

  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 80.67.29.44 ↩ mxlbpu.ispgateway.de
  • 80.67.18.126 ↩ mxlb.ispgateway.de

SOA Record

Raw SOA dns1.nsdns.info tech.key-systems.net 2025010701 10800 3600 604800 28800
Primary NS (mname)
dns1.nsdns.info
Admin Email (rname)
tech@key-systems.net
Serial
2025010701
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
28800s

Nameservers (NS)

dns3.nsdns.info
dns1.nsdns.info
dns2.nsdns.info

SPF Record

✓ Strict (-all)
v=spf1 include:spf.mailjet.com mx a include:spf.sendinblue.com include:ispgateway.de ip4:78.47.12.186/32 ip4:83.135.45.178 ip4:83.135.45.179 a:mail01.terrabaltic.de include:spf.protection.outlook.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

3 records
  • MS=ms77607947
  • SPFv=spf1 include:spf.mailjet.com mx a include:spf.sendinblue.com include:ispgateway.de ip4:78.47.12.186/32 ip4:83.135.45.178 ip4:83.135.45.179 a:mail01.terrabaltic.de include:spf.protection.outlook.com -all
  • Sendinblue-code:683ed4fb476e966a27d64e97d1018463
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