Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3yz.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 05:27:34 UTC · ↺ Refresh
MX Hostnames
- w0159fda.kasserver.com
MX Priorities
- w0159fda.kasserver.com: 10
A / AAAA Records
- 104.21.57.130 (no PTR)
- 172.67.163.221 (no PTR)
- 2606:4700:3031::6815:3982 (no PTR)
- 2606:4700:3035::ac43:a3dd (no PTR)
Mail Server IPs
- 85.13.156.186 ↩ dd25222.kasserver.com
SOA Record
Raw SOA
ned.ns.cloudflare.com dns.cloudflare.com 2397853867 10000 2400 604800 1800
Primary NS (mname)
ned.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397853867
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ned.ns.cloudflare.com
nina.ns.cloudflare.com
SPF Record
✗ Invalid
v=spf1 -all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 -all
Full email verification for 3yz.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits