koeln.de

Valid Email Server
Domain Lookup › koeln.de

Domain Overview

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

Checked via [email protected] · 2026-03-18 00:59:21 UTC · ↺ Refresh

MX Hostnames

  • mailin.koeln.de
  • secondary.snafu.de

MX Priorities

  • mailin.koeln.de: 10
  • secondary.snafu.de: 50

A / AAAA Records

  • 81.173.246.122 (no PTR)

Mail Server IPs

  • 84.23.254.54 ↩ mailin.koeln.de
  • 84.23.254.17 (no PTR)

SOA Record

Raw SOA dns11.netcologne.de hostmaster.netcologne.de 2026031103 10800 3600 3600000 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2026031103
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

dns13.netcologne.de
dns14.netcologne.de
dns12.netcologne.de
dns11.netcologne.de

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf1.snafu.de include:_spf2.snafu.de include:netcologne.de ~all
📊 DNS lookups: 3/10
~ 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

2 records
  • MS=7FA3943A71F70FF079394B0F769D52A53679AC71
  • SPFv=spf1 include:_spf1.snafu.de include:_spf2.snafu.de include:netcologne.de ~all
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