| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx.frederikkrogh.dk | 54.37.79.68 57.129.98.79 |
— — |
AS16276 OVH SAS AS16276 OVH SAS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mx.frederikkrogh.dk → 57.129.98.79 |
| 🔶 Autoconfig | mx.frederikkrogh.dk → 57.129.98.79 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _imaps._tcp | 0 | 1 | 993 | mx.frederikkrogh.dk |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (marine-teknik.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.marine-teknik.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:postmaster@marine-teknik.dk |
| Check | Result |
|---|---|
| Status | ⚠️ Invalid |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✗ Missing / invalid |
| Policy ID | 10967837177021928669 |
| Policy MX | — |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:postmaster@marine-teknik.dk |
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | mailto:postmaster@marine-teknik.dk |
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com; cansignhttpexchanges=yes |
| 0 | issue | letsencrypt.org |
| 0 | issue | pki.goog; cansignhttpexchanges=yes |
| 0 | issue | ssl.com |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com; cansignhttpexchanges=yes |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | pki.goog; cansignhttpexchanges=yes |
| 0 | issuewild | ssl.com |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.marine-teknik.dk | eu1.netbird.services |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2413513238 |
| Primary NS (MNAME) | katja.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-30 02:19:42 | 3010ms | 2 NS 0 A 1 MX | 🔓 Insecure | View |
| 2026-08-06 22:47:50 | 1555ms | 2 NS 0 A 1 MX | 🔓 Insecure | View |
| 2026-07-22 20:39:56 | 3352ms | 2 NS 0 A 2 MX | 🔓 Insecure | View |
| 2026-07-21 19:55:11 | 1504ms | 2 NS 2 A 2 MX | 🔓 Insecure | View |
| 2026-07-14 03:31:41 | 2666ms | 2 NS 0 A 2 MX | 🔓 Insecure | View |
| 2026-07-09 03:35:27 | 1234ms | 2 NS 0 A 2 MX | 🔓 Insecure | View |
| 2026-06-19 22:20:17 | 1368ms | 2 NS 0 A 2 MX | 🔓 Insecure | View |
| 2026-06-17 17:54:47 | 8263ms | 2 NS 0 A 2 MX | 🔓 Insecure | View |