Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hamburg-immobilie.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 13:50:47 UTC · ↺ Refresh
MX Hostnames
- mx2.onoffice.de
- mx3.onoffice.de
- mx1.onoffice.de
MX Priorities
- mx2.onoffice.de: 10
- mx1.onoffice.de: 10
- mx3.onoffice.de: 20
A / AAAA Records
- 5.22.145.16 ↩ relay.mail-forwarder.io
- 5.22.145.121 ↩ relay.mail-forwarder.io
- 2a00:18e0:5:3:dfe2:c743:85aa:61bc ↩ relay.mail-forwarder.io
- 2a00:18e0:5:2:7577:4e4d:413b:f507 ↩ relay.mail-forwarder.io
Mail Server IPs
- 95.130.253.71 ↩ mx2.onoffice.de
- 95.130.253.60 ↩ mx1.onoffice.de
- 95.130.253.56 ↩ mx3.onoffice.de
SOA Record
Raw SOA
ns1.domaindiscount24.net tech.key-systems.net 2025045746 10800 3600 604800 28800
Primary NS (mname)
ns1.domaindiscount24.net
Admin Email (rname)
tech@key-systems.net
Serial
2025045746
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
28800s
Nameservers (NS)
ns2.domaindiscount24.net
ns3.domaindiscount24.net
ns1.domaindiscount24.net
SPF Record
✓ Soft Fail (~all)
v=spf1 a include:_spf.onoffice.de ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
1 record- SPFv=spf1 a include:_spf.onoffice.de ~all
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