duerr-tools.de

Valid Email Server
Domain Lookup › duerr-tools.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
duerr-tools.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 23:55:51 UTC · ↺ Refresh

MX Hostnames

  • mail.duerr-tools.de

MX Priorities

  • mail.duerr-tools.de: 10

A / AAAA Records

  • 217.160.0.210 ↩ 217-160-0-210.elastic-ssl.ui-r.com

Mail Server IPs

  • 31.209.113.183 ↩ mail.duerr-tools.de

SOA Record

Raw SOA ns1092.ui-dns.biz hostmaster.schlund.de 2016071337 28800 7200 604800 300
Primary NS (mname)
ns1092.ui-dns.biz
Admin Email (rname)
hostmaster@schlund.de
Serial
2016071337
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1092.ui-dns.com
ns1092.ui-dns.biz
ns1092.ui-dns.de
ns1092.ui-dns.org

SPF Record

✓ Strict (-all)
v=spf1 a a:mail.duerr-tools.de -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

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

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

All TXT Records

2 records
  • google-site-verification=tnDKHq81gSJUsqOSGmhp6EN8Umm0u_6C4FxxFqCOEL4
  • SPFv=spf1 a a:mail.duerr-tools.de -all
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