Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
deltanet-production.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 19:30:56 UTC · ↺ Refresh
MX Hostnames
- mail.dnet-p.de
MX Priorities
- mail.dnet-p.de: 0
A / AAAA Records
- 176.9.143.4 ↩ srv-de-3.nvme-servers.com
- 2a01:4f8:160:2104::2 (no PTR)
Mail Server IPs
- 95.216.244.134 ↩ mail.dnet-p.de
- 2a01:4f9:2b:26c2::2 ↩ mail.dnet-p.de
SOA Record
Raw SOA
ns1.first-ns.de dns.hetzner.com 2026012400 300 1800 1209600 300
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026012400
Refresh
300s
Retry
1800s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
robotns3.second-ns.com
ns1.first-ns.de
robotns2.second-ns.de
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:176.9.143.4 ip6:2a01:4f8:160:2104::2 include:_spf.google.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=0; adkim=s; aspf=s; pct=100; rf=afrf; ri=86400; sp=reject
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx ip4:176.9.143.4 ip6:2a01:4f8:160:2104::2 include:_spf.google.com -all
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