Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bonsack.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 17:30:57 UTC · ↺ Refresh
MX Hostnames
- w0202f56.kasserver.com
MX Priorities
- w0202f56.kasserver.com: 10
A / AAAA Records
- 85.13.146.243 ↩ dd45328.kasserver.com
Mail Server IPs
- 85.13.146.243 ↩ dd45328.kasserver.com
SOA Record
Raw SOA
ns5.kasserver.com hostmaster.kasserver.com 2510141026 28800 7200 1209600 7200
Primary NS (mname)
ns5.kasserver.com
Admin Email (rname)
hostmaster@kasserver.com
Serial
2510141026
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s
Nameservers (NS)
ns6.kasserver.com
ns5.kasserver.com
SPF Record
✓ Strict (-all)
v=spf1 mx a -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:[email protected];ri=86400;aspf=s;adkim=s;fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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 -all
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