Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
klaeffling.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 12:16:13 UTC · ↺ Refresh
MX Hostnames
- mail.klaeffling.de
- relay.rzone.de
MX Priorities
- mail.klaeffling.de: 10
- relay.rzone.de: 100
A / AAAA Records
- 81.169.145.145 ↩ w91.rzone.de
- 2a01:238:20a:202:1145:: ↩ w91.rzone.de
Mail Server IPs
- 81.209.155.99 (no PTR)
- 81.169.145.96 ↩ relay.rzone.de
SOA Record
Raw SOA
shades01.rzone.de hostmaster.strato-rz.de 2020050854 86400 7200 604800 300
Primary NS (mname)
shades01.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050854
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks08.rzone.de
shades01.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 mx a include:_spf.strato.com include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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:_spf.strato.com include:spf.protection.outlook.com -all
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