Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
knebb.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 23:30:41 UTC · ↺ Refresh
MX Hostnames
- netcup.knebb.de
- mail.knebb.de
MX Priorities
- mail.knebb.de: 10
- netcup.knebb.de: 20
A / AAAA Records
- 152.53.252.84 ↩ mail.knebb.de
Mail Server IPs
- 152.53.252.84 ↩ mail.knebb.de
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2026011581 86400 7200 3600000 86400
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2026011581
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
root-dns.netcup.net
second-dns.netcup.net
third-dns.netcup.net
SPF Record
✓ Strict (-all)
v=spf1 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];aspf=s;adkim=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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 -all
Full email verification for knebb.de
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