mailrelay.dk
Last scanned: 2026-08-27 08:08:44  ·  777ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   41ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S
🌍 A Records1 records   33ms
IPTTLPTRASNISP / OrgCIDRCountryCity
5.186.56.17 43200s 5.186.56.17.static.fibianet.dk AS44869 FIBIA P/S 5.186.0.0/16 🇩🇰 Denmark Rønde
📧 MX Records1 records   42ms
PriorityTTLMail ServerIP addressesPTRASN
10 86400s mailrelay.dk 5.186.56.17 5.186.56.17.static.fibianet.dk AS44869 FIBIA P/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover5.186.56.17
🔶 Autoconfig5.186.56.17
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   214ms
TXT Record
as=1607364967
v=spf1 ip4:5.186.56.17/32 ?all
✉️ SPF
PolicyRecord (mailrelay.dk)
?all (neutral) v=spf1 ip4:5.186.56.17/32 ?all
📨 DMARC
PolicyRecord (_dmarc.mailrelay.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:dmarc.rua@mailrelay.dk; ruf=mailto:dmarc.ruf@mailrelay.dk
📬 MTA-STS114ms
CheckResult
Status⚠️ Invalid
TXT record (_mta-sts)✓ Found
HTTPS policy✗ Missing / invalid
Policy ID20250327T010101
Policy MX—
📈 TLSRPT
✗ No TLSRPT record — no SMTP TLS failure reporting
📜 CAA Records
✗ No CAA records — any CA may issue certificates
🔏 ACME Challenge
TypeNameValue
TXT _acme-challenge.mailrelay.dk AcVK1xkvSN-vffXgdodGJkMj2cpXzpuzh4lAW7qdtjk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC91ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026081101
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
41ms
A
33ms
MX
42ms
AAAA
33ms
TXT
214ms
CAA
34ms
HTTPS
31ms
TLSA
58ms
SOA
0ms
MTA-STS
114ms
DNSSEC
91ms
SRV
72ms
Total
777ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 08:08:44 777ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-12 17:27:02 924ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-02 19:10:49 16521ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-03 08:25:25 871ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 13:11:48 3718ms 2 NS 1 A 1 MX 🔒 Secure View
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