Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kosik.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 09:33:41 UTC · ↺ Refresh
MX Hostnames
- mailgate1.edt.de
MX Priorities
- mailgate1.edt.de: 10
A / AAAA Records
- 94.142.218.3 ↩ web3.edt.de
- 2a02:868::3:0:3:3:1 (no PTR)
Mail Server IPs
- 213.165.96.16 ↩ mailgate1.edt.de
SOA Record
Raw SOA
auth-ns1.edt.de hostmaster.erdenreich.net 2025121106 10800 3600 1209600 21600
Primary NS (mname)
auth-ns1.edt.de
Admin Email (rname)
hostmaster@erdenreich.net
Serial
2025121106
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
21600s
Nameservers (NS)
auth-ns4.edt.de
auth-ns1.edt.de
auth-ns2.edt.de
auth-ns3.edt.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mailjet.com mx include:spf.edt.de include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];ruf=mailto:[email protected];ri=3600;aspf=s;adkim=r;fo=1:d:s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=ms20268843
- SPFv=spf1 include:spf.mailjet.com mx include:spf.edt.de include:spf.protection.outlook.com -all
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