Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
christophermueller.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 00:30:55 UTC · ↺ Refresh
MX Hostnames
- mail.christophermueller.de
MX Priorities
- mail.christophermueller.de: 10
A / AAAA Records
- 80.158.92.156 ↩ plesk.twenty20.cloud
Mail Server IPs
- 80.158.92.156 ↩ plesk.twenty20.cloud
SOA Record
Raw SOA
nsd4.schlundtech.de cmd.twenty20.eu 2026021502 10800 3600 604800 10800
Primary NS (mname)
nsd4.schlundtech.de
Admin Email (rname)
cmd@twenty20.eu
Serial
2026021502
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
nsd4.schlundtech.de
nsb4.schlundtech.de
nsc4.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +a:plesk.twenty20.cloud -all
📊 DNS lookups: 3/10
✓ 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
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +a +mx +a:plesk.twenty20.cloud -all
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