cosmosnet.de

Valid Email Server
Domain Lookup › cosmosnet.de

Domain Overview

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

Checked via [email protected] · 2026-03-31 16:04:38 UTC · ↺ Refresh

MX Hostnames

  • mforward2.cosmosnet.de
  • mforward.cosmosnet.de
  • mailin.cosmosnet.de

MX Priorities

  • mforward2.cosmosnet.de: 20
  • mailin.cosmosnet.de: 10
  • mforward.cosmosnet.de: 15

A / AAAA Records

  • 88.217.254.134 ↩ host-88-217-254-134.customer.m-online.net

Mail Server IPs

  • 88.217.254.140 ↩ mforward2.cosmosnet.de
  • 80.81.10.108 ↩ host-80-81-10-108.static.customer.m-online.net
  • 87.118.106.30 ↩ mforward.cosmosnet.de

SOA Record

Raw SOA ns1.cosmosnet.de isp.cosmosnet.de 2025070200 10800 1800 604800 43200
Primary NS (mname)
ns1.cosmosnet.de
Admin Email (rname)
isp@cosmosnet.de
Serial
2025070200
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
43200s

Nameservers (NS)

ns2.cosmosnet.de
ns1.cosmosnet.de
ns3.cosmosnet.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:88.217.254.0/24 mx include:spf.m-online.net include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ 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

2 records
  • SPFv=spf1 ip4:88.217.254.0/24 mx include:spf.m-online.net include:spf.protection.outlook.com -all
  • MS=ms11407216
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