Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
katzmann-sig.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 19:15:23 UTC · ↺ Refresh
MX Hostnames
- mail.katzmann-sig.de
MX Priorities
- mail.katzmann-sig.de: 10
A / AAAA Records
- 188.40.3.51 ↩ dedi2151.your-server.de
Mail Server IPs
- 188.40.3.51 ↩ dedi2151.your-server.de
SOA Record
Raw SOA
nsa1.schlundtech.de sascha\.katzmann.heureka-shop.com 2022082800 43200 7200 1209600 600
Primary NS (mname)
nsa1.schlundtech.de
Admin Email (rname)
sascha\@katzmann.heureka-shop.com
Serial
2022082800
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
nsc1.schlundtech.de
nsa1.schlundtech.de
nsd1.schlundtech.de
nsb1.schlundtech.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;pct=50;adkim=r;aspf=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
⚠ Policy applies to 50% of failing messages only
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 mx ~all
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