Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mertens24.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 18:51:48 UTC · ↺ Refresh
MX Hostnames
- mxlb.ispgateway.de
MX Priorities
- mxlb.ispgateway.de: 100
A / AAAA Records
- 92.205.198.237 ↩ mc22482.ispgateway.de
- 2a00:116a:106:ab50:: ↩ mc22482.ispgateway.de
Mail Server IPs
- 80.67.18.126 ↩ mxlb.ispgateway.de
SOA Record
Raw SOA
ns.namespace4you.de hostmaster.mertens24.de 1759304903 16384 2048 1048576 2560
Primary NS (mname)
ns.namespace4you.de
Admin Email (rname)
hostmaster@mertens24.de
Serial
1759304903
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
ns2.namespace4you.de
ns.namespace4you.de
SPF Record
✓ Strict (-all)
v=spf1 mx a include:ispgateway.de include:mxlb.ispgateway.de include:sslout.de -all
📊 DNS lookups: 5/10
✓ 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
1 record- SPFv=spf1 mx a include:ispgateway.de include:mxlb.ispgateway.de include:sslout.de -all
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