kupfer-sohn.de

Valid Email Server
Domain Lookup › kupfer-sohn.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
kupfer-sohn.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 07:19:34 UTC · ↺ Refresh

MX Hostnames

  • mx-01-eu-central-1.prod.hydra.sophos.com
  • mx-02-eu-central-1.prod.hydra.sophos.com

MX Priorities

  • mx-02-eu-central-1.prod.hydra.sophos.com: 200
  • mx-01-eu-central-1.prod.hydra.sophos.com: 10

A / AAAA Records

  • 185.243.134.21 ↩ shared-clump0078-web.agenturserver.it

Mail Server IPs

  • 18.159.237.67 ↩ ec2-18-159-237-67.eu-central-1.compute.amazonaws.com
  • 52.57.79.230 ↩ ec2-52-57-79-230.eu-central-1.compute.amazonaws.com

SOA Record

Raw SOA shades05.rzone.de hostmaster.strato-rz.de 2020050791 86400 7200 604800 300
Primary NS (mname)
shades05.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050791
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks18.rzone.de
shades05.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 mx include:_spf.strato.com include:_spf_eucentral1.prod.hydra.sophos.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

4 records
  • MS=A4270D107D0D015A4FCFCF918BCCB2D91680DBE4
  • sophos-domain-verification=6ec2087cf933c9c66194d90c8e0c3b64dd2de0070afdd326e2822035d249f68e
  • sophos-domain-verification=5bb184924e5ef3d0a244a402f1e560cde85780e5
  • SPFv=spf1 mx include:_spf.strato.com include:_spf_eucentral1.prod.hydra.sophos.com -all
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