lemstergroup.de

Valid Email Server
Domain Lookup › lemstergroup.de

Domain Overview

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

Checked via [email protected] · 2026-03-21 10:07:54 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • mx-01-eu-central-1.prod.hydra.sophos.com: 10
  • mx-02-eu-central-1.prod.hydra.sophos.com: 20

A / AAAA Records

  • 5.9.152.164 ↩ s23.min-server.de
  • 2a01:4f8:190:409b::2 ↩ s23.min-server.de

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 ns1.rrpproxy.net tech.rrpproxy.net 2025040103 10800 3600 604800 28800
Primary NS (mname)
ns1.rrpproxy.net
Admin Email (rname)
tech@rrpproxy.net
Serial
2025040103
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
28800s

Nameservers (NS)

ns2.rrpproxy.net
ns1.rrpproxy.net
ns3.rrpproxy.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf_eucentral1.prod.hydra.sophos.com -all
📊 DNS lookups: 2/10
✓ 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

3 records
  • sophos-domain-verification=1d56a2376c54bbccf06b15b7753f218e2b15f2a2
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf_eucentral1.prod.hydra.sophos.com -all
  • MS=ms51246857
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