Recon Report
Email Spoofability Can you spoof email from this domain? Partially DMARC quarantine at limited percentage
SPF — Sender Policy Framework
RFC 7208 — Sender Policy Framework
SPF allows domain owners to specify which mail servers are authorized to send email on behalf of their domain. Without SPF, any server can forge the envelope sender.
DKIM — DomainKeys Identified Mail
RFC 6376 — DomainKeys Identified Mail
DKIM provides cryptographic authentication of email messages. Selector names often reveal email providers (e.g., google, selector1 = Microsoft 365).
DMARC — Domain-based Message Authentication
RFC 7489 — DMARC
DMARC ties SPF and DKIM together with a policy that tells receiving servers what to do with unauthenticated mail. p=none is monitoring only — attackers love it.
Transport Security Can you intercept email in transit? No No MTA-STS or DANE — mail transport encryption is opportunistic only
DANE / TLSA
MTA-STS
TLS-RPT
RFC 8460 — SMTP TLS Reporting
TLS-RPT enables reporting of TLS negotiation failures. Without it, STARTTLS downgrade attacks leave no trace.
Brand & Certificate Security Can you fake this brand's identity? Likely DMARC quarantine flags but does not reject spoofed mail (RFC 7489 §6.3) — no BIMI or CAA (RFC 8659) reinforcement leaves brand impersonation largely unaddressed
BIMI
CAA — Certificate Authority Authorization
RFC 8659 — CAA
CAA records specify which Certificate Authorities are authorized to issue certificates. Without CAA, an attacker could obtain a valid cert from any CA.
DNS Infrastructure Can you poison the DNS? No DNSSEC signed and validated, cryptographic chain of trust verified
DNSSEC
RFC 4033–4035 — DNSSEC
DNSSEC adds cryptographic signatures to DNS responses, preventing cache poisoning and response forgery. Without DNSSEC, an attacker can forge DNS answers.
NS Delegation
ns1.argewebhosting.eu
ns2.argewebhosting.com
ns3.argewebhosting.nl
Attack Surface Discovery What can you find from the outside?
Subdomain Discovery (Multi-Source)
| Subdomain |
|---|
map[cert_count:2 first_seen:2026-01-31T12:45:50 is_current:true issuers:[Let's Encrypt] name:app.marketsimulator.blauw.com source:ct] |
map[cert_count:1 cname_target:autodiscover.outlook.com first_seen:2025-04-06 is_current:true issuers:[GoDaddy.com, Inc.] name:autodiscover.blauw.com services:[map[http_title:Did not follow redirect to https://outlook.office365.com/mail/?realm=blauw.com&vd=autodiscover port:80 product:Microsoft IIS httpd protocol:tcp service:http version:10.0]] source:dns] |
map[cert_count:2 cname_target:ghs.googlehosted.com first_seen:2026-01-13T09:14:30 is_current:true issuers:[Google Trust Services] name:biva.blauw.com services:[map[http_title:Did not follow redirect to https://biva.blauw.com/ port:80 product:Google httpd protocol:tcp service:http] map[cert_sans_count:1 port:443 product:Google httpd protocol:tcp service:http]] source:ct] |
map[cert_count:1 cname_target:blauwtalkdashboard-c5b9czb3egbpdpee.westeurope-01.azurewebsites.net first_seen:2026-02-17T00:00:00 is_current:true issuers:[DigiCert Inc] name:blauwtalk.blauw.com source:ct] |
map[cert_count:1 first_seen:2025-04-06 is_current:true issuers:[GoDaddy.com, Inc.] name:ftp.blauw.com source:dns] |
map[cert_count:1 first_seen:2025-04-06 is_current:true issuers:[GoDaddy.com, Inc.] name:images.blauw.com source:dns] |
map[cert_count:3 cname_target:blauw.actonservice.com first_seen:2025-02-10T13:23:06 is_current:true issuers:[GoDaddy.com, Inc.] name:marketing.blauw.com source:ct] |
map[cert_count:2 cname_target:blauwmarketsimulator-b5hycngahxg2bqbu.westeurope-01.azurewebsites.net first_seen:2026-01-05T00:00:00 is_current:true issuers:[DigiCert, Inc.] name:marketsimulator2.blauw.com source:ct] |
map[cert_count:4 first_seen:2026-02-20T07:12:53 is_current:true issuers:[Let's Encrypt] name:mijn.blauw.com source:ct] |
map[cert_count:1 cname_target:autodiscover.outlook.com first_seen:2025-04-06 is_current:true issuers:[GoDaddy.com, Inc.] name:owa.blauw.com services:[map[http_title:Did not follow redirect to https://outlook.office365.com/mail/?realm=blauw.com&vd=owa port:80 product:Microsoft IIS httpd protocol:tcp service:http version:10.0]] source:dns] |
map[cert_count:1 cname_target:owa.blauw.com first_seen:2025-04-06 is_current:true issuers:[GoDaddy.com, Inc.] name:pop3.blauw.com source:dns] |
map[cert_count:5 cname_target:witty-moss-06dbf4803.3.azurestaticapps.net first_seen:2026-02-18T00:00:00 is_current:true issuers:[DigiCert Inc DigiCert, Inc.] name:rmia.blauw.com source:ct] |
map[cert_count:1 first_seen:2025-04-06 is_current:true issuers:[GoDaddy.com, Inc.] name:sftp.blauw.com source:dns] |
map[cert_count:4 first_seen:2026-02-07T20:57:15 is_current:true issuers:[Let's Encrypt] name:werkenbij.blauw.com source:ct] |
map[cert_count:8 cname_target:cdn.webflow.com first_seen:2026-01-24T08:07:59 is_current:true issuers:[Google Trust Services] name:www.blauw.com source:ct] |
map[cert_count:3 first_seen:2025-02-10T13:23:06 is_current:true issuers:[GoDaddy.com, Inc.] name:www.marketing.blauw.com source:ct] |
SaaS Services (TXT Record Discovery)
Secret Exposure
Intelligence Metadata Can you verify this independently?
17a86f13c3ee30a62872b8a136b287e7556f5013bf364eee2b8ef16c867ac1be6717be5bc0277db60d4d0b5ff1df935e422258916666fa00d0aa32e6cedff90d
c9e6067446d9681e…
