opticunion.de

Valid Email Server
Domain Lookup › opticunion.de

Domain Overview

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

Checked via [email protected] · 2026-03-29 08:19:00 UTC · ↺ Refresh

MX Hostnames

  • mx00.kundenserver.de
  • mx01.kundenserver.de
  • mail.opticunion.de

MX Priorities

  • mx00.kundenserver.de: 20
  • mail.opticunion.de: 10
  • mx01.kundenserver.de: 21

A / AAAA Records

  • 217.160.0.40 ↩ 217-160-0-40.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::2bb ↩ 2001-08d8-100f-f000-0000-0000-0000-02bb.elastic-ssl.ui-r.com

Mail Server IPs

  • 212.227.15.41 ↩ mx00.kundenserver.de
  • 185.75.166.51 ↩ dyn-185-75-166-51.stiegeler.com
  • 217.72.192.67 ↩ mx01.kundenserver.de

SOA Record

Raw SOA ns1097.ui-dns.org hostmaster.schlund.de 2016041878 28800 7200 604800 300
Primary NS (mname)
ns1097.ui-dns.org
Admin Email (rname)
hostmaster@schlund.de
Serial
2016041878
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1097.ui-dns.de
ns1097.ui-dns.org
ns1097.ui-dns.biz
ns1097.ui-dns.com

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:185.75.166.51 ip4:185.75.166.48 a:mout.kundenserver.de include:eu.hosting-webspace.io include:_spf-eu.ionos.com a:mout-bounce.kundenserver.de a:mout-xforward.kundenserver.de -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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
  • MS=25507D383682DBE9D67C02F7F94643440AF1D72D
  • v=verifydomain MS=4432423
  • SPFv=spf1 mx ip4:185.75.166.51 ip4:185.75.166.48 a:mout.kundenserver.de include:eu.hosting-webspace.io include:_spf-eu.ionos.com a:mout-bounce.kundenserver.de a:mout-xforward.kundenserver.de -all
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