cossbau.de

Valid Email Server
Domain Lookup › cossbau.de

Domain Overview

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

Checked via [email protected] · 2026-03-25 01:10:39 UTC · ↺ Refresh

MX Hostnames

  • mail.cossbau.de

MX Priorities

  • mail.cossbau.de: 10

A / AAAA Records

  • 78.47.8.100 ↩ dedi2612.your-server.de

Mail Server IPs

  • 78.47.8.100 ↩ dedi2612.your-server.de

SOA Record

Raw SOA nsa3.schlundtech.de info.altmarkweb.de 2019012900 43200 7200 1209600 86400
Primary NS (mname)
nsa3.schlundtech.de
Admin Email (rname)
info@altmarkweb.de
Serial
2019012900
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

nsc3.schlundtech.de
nsa3.schlundtech.de
nsb3.schlundtech.de
nsd3.schlundtech.de

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;sp=none;pct=50;adkim=r;aspf=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
⚠ Policy applies to 50% of failing messages only

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

1 record
  • SPFv=spf1 a mx ~all
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