holtz-immobilien.de

Valid Email Server
Domain Lookup › holtz-immobilien.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
holtz-immobilien.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 22:11:04 UTC · ↺ Refresh

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MX Hostnames

  • mx03.hornetsecurity.com
  • mx04.hornetsecurity.com
  • mx01.hornetsecurity.com
  • mx02.hornetsecurity.com

MX Priorities

  • mx01.hornetsecurity.com: 10
  • mx03.hornetsecurity.com: 30
  • mx04.hornetsecurity.com: 40
  • mx02.hornetsecurity.com: 20

A / AAAA Records

  • 95.130.253.13 ↩ 95-130-253-13.reverse.cust.as47215.net

Mail Server IPs

  • 94.100.132.8 ↩ mx01.hornetsecurity.com
  • 94.100.134.8 ↩ mx03.hornetsecurity.com
  • 94.100.136.7 ↩ mx04.hornetsecurity.com
  • 94.100.136.8 ↩ mx02.hornetsecurity.com

SOA Record

Raw SOA ns1043.ui-dns.org hostmaster.1und1.de 2016071421 28800 7200 604800 300
Primary NS (mname)
ns1043.ui-dns.org
Admin Email (rname)
hostmaster@1und1.de
Serial
2016071421
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1043.ui-dns.com
ns1043.ui-dns.de
ns1043.ui-dns.org
ns1043.ui-dns.biz

SPF Record

✓ Soft Fail (~all)
v=spf1 a include:_spf.onoffice.de ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

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=ms43795531
  • protonmail-verification=3cde717563af5c68ca22b00b044567f8c5f70009
  • SPFv=spf1 a include:_spf.onoffice.de ~all
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