sieberundpartner.de

Valid Email Server
Domain Lookup › sieberundpartner.de

Domain Overview

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

Checked via [email protected] · 2026-03-18 10:55:18 UTC · ↺ Refresh

MX Hostnames

  • maildomain.datevnet.de
  • maildomain.datevnet.com

MX Priorities

  • maildomain.datevnet.com: 20
  • maildomain.datevnet.de: 10

A / AAAA Records

  • 78.47.47.55 ↩ dedi437.your-server.de

Mail Server IPs

  • 193.27.49.221 ↩ maildomain.datevnet.com
  • 193.27.49.207 ↩ maildomain.datevnet.com
  • 2a00:e50:f155:7::cf ↩ maildomain.datevnet.com
  • 2a00:e50:f155:7::dd ↩ maildomain.datevnet.com
  • 193.27.49.206 ↩ maildomain.datevnet.de
  • 193.27.49.220 ↩ maildomain.datevnet.de
  • 2a00:e50:f155:7::ce ↩ maildomain.datevnet.de
  • 2a00:e50:f155:7::dc ↩ maildomain.datevnet.de

SOA Record

Raw SOA ns1.first-ns.de postmaster.your-server.de 2026011200 86400 10800 3600000 7200
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
postmaster@your-server.de
Serial
2026011200
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
7200s

Nameservers (NS)

ns.second-ns.com
ns1.your-server.de
ns3.second-ns.de

SPF Record

✓ Strict (-all)
v=spf1 a mx include:spf.protection.outlook.com include:maildomain._spf.datev.de ip4:78.47.47.55 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 a mx include:spf.protection.outlook.com include:maildomain._spf.datev.de ip4:78.47.47.55 -all
  • MS=ms42001033
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