| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (bluebiz.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.bluebiz.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026043000 |
| Primary NS (MNAME) | ns1.eurodns.com |
| Responsible (RNAME) | hostmaster@eurodns.com |
| Refresh | 43200s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-06-24 16:52:22 | 743ms | 4 NS 0 A 1 MX | 🔓 Insecure | View |
| 2026-06-21 15:41:31 | 2295ms | 4 NS 0 A 1 MX | 🔓 Insecure | View |
| 2026-06-20 15:59:49 | 1125ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-16 15:16:17 | 986ms | 4 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-06-16 15:09:46 | 2519ms | 4 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-06-16 15:05:40 | 300ms | 4 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-06-16 15:00:25 | 2850ms | 4 NS 0 A 0 MX | 🔓 Insecure | View |