Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stl-gmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 12:14:32 UTC · ↺ Refresh
MX Hostnames
- mail.stl.systems
- mail2.stl.systems
MX Priorities
- mail2.stl.systems: 10
- mail.stl.systems: 20
A / AAAA Records
- 78.47.8.97 ↩ dedi2609.your-server.de
Mail Server IPs
- 170.17.129.161 ↩ mail2.stl.systems
- 81.6.4.89 ↩ mail.stl.systems
SOA Record
Raw SOA
ns1.your-server.de postmaster.your-server.de 2026011300 14400 1800 604800 7200
Primary NS (mname)
ns1.your-server.de
Admin Email (rname)
postmaster@your-server.de
Serial
2026011300
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
7200s
Nameservers (NS)
ns1.your-server.de
ns3.second-ns.de
ns.second-ns.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:170.17.129.161 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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
3 records- SPFv=spf1 a mx ip4:170.17.129.161 -all
- SPFv=spf1 a mx ip4:81.6.4.89 -all
- swisssign-check=BFRcp-VHSpXmdOUB-SRx9LYwKJs
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