duho.de

Valid Email Server
Domain Lookup › duho.de

Domain Overview

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

Checked via [email protected] · 2026-03-27 06:10:52 UTC · ↺ Refresh

MX Hostnames

  • mail.duho.de

MX Priorities

  • mail.duho.de: 10

A / AAAA Records

  • 193.34.145.200 ↩ m2794.contabo.net

Mail Server IPs

  • 193.34.145.200 ↩ m2794.contabo.net

SOA Record

Raw SOA ns1.contabo.net hostmaster.contabo.de 1774591849 10800 3600 604800 3600
Primary NS (mname)
ns1.contabo.net
Admin Email (rname)
hostmaster@contabo.de
Serial
1774591849
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns2.contabo.net
ns1.contabo.net
ns3.contabo.net

SPF Record

✓ Soft Fail (~all)
v=spf1 +a +mx +include:mail-relay.contabo.net ~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

✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

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

All TXT Records

1 record
  • SPFv=spf1 +a +mx +include:mail-relay.contabo.net ~all
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