Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gamma-systems.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 03:44:42 UTC · ↺ Refresh
MX Hostnames
- rubidium.selfhost.de
MX Priorities
- rubidium.selfhost.de: 50
A / AAAA Records
- 185.26.156.77 ↩ rubidium.selfhost.de
- 2a00:d0c0:200::b9:1a:9c:46 ↩ rubidium.selfhost.de
Mail Server IPs
- 185.26.156.77 ↩ rubidium.selfhost.de
- 2a00:d0c0:200::b9:1a:9c:46 ↩ rubidium.selfhost.de
SOA Record
Raw SOA
sec.mordac.de hostmaster.gamma-systems.de 1774925995 16384 2048 1048576 2560
Primary NS (mname)
sec.mordac.de
Admin Email (rname)
hostmaster@gamma-systems.de
Serial
1774925995
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
sec.mordac.de
pri.mordac.de
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
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
No TXT records found.
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