Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tk-energietechnik.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 08:20:46 UTC · ↺ Refresh
MX Hostnames
- tk-energietechnik.de.1.0001.arsmtp.com
- tk-energietechnik.de.2.0001.arsmtp.com
MX Priorities
- tk-energietechnik.de.1.0001.arsmtp.com: 10
- tk-energietechnik.de.2.0001.arsmtp.com: 20
A / AAAA Records
- 83.246.49.40 (no PTR)
Mail Server IPs
- 5.152.185.144 ↩ server420.appriver.com
- 5.152.188.54 ↩ server421.appriver.com
SOA Record
Raw SOA
nsa1.schlundtech.de info.csg-systemhaus.de 2025091100 43200 7200 1209600 86400
Primary NS (mname)
nsa1.schlundtech.de
Admin Email (rname)
info@csg-systemhaus.de
Serial
2025091100
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsa1.schlundtech.de
nsb1.schlundtech.de
nsd1.schlundtech.de
nsc1.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.exclaimer.net -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
2 records- SPFv=spf1 include:spf.protection.outlook.com include:spf.exclaimer.net -all
- MS=ms53372149
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