duecon.de

Valid Email Server
Domain Lookup › duecon.de

Domain Overview

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

Checked via [email protected] · 2026-03-20 08:31:24 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 149.232.252.19 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ns1-eu.123ns.eu hostmaster.123ns.eu 2025111201 86400 7200 3600000 86400
Primary NS (mname)
ns1-eu.123ns.eu
Admin Email (rname)
hostmaster@123ns.eu
Serial
2025111201
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s

Nameservers (NS)

ns2-eu.123ns.de
ns4-eu.123ns.de
ns3-eu.123ns.eu
ns1-eu.123ns.eu

SPF Record

✓ Strict (-all)
v=spf1 a mx include:maildomain._spf.datev.de include:datevnet._spf.datev.de include:spf.protection.outlook.com include:spf.mxg.cloud -all
📊 DNS lookups: 6/10
✓ 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:maildomain._spf.datev.de include:datevnet._spf.datev.de include:spf.protection.outlook.com include:spf.mxg.cloud -all
  • MS=ms53975081
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