Mail Access Checker

This tool analyzes mail access posture by collecting domain-level signals and mail-system configuration signals to produce a concise risk assessment and remediation plan for IT security teams, SOC analysts, and system administrators responsible for email hygiene. It relies on observable configurations and public DNS data rather than credential harvesting, making it suitable for early triage and compliance reviews.
Inputs include domain_name, mail_server, dns_records (MX, SPF, DKIM, DMARC), authentication_policy, and optional recent_abuse_signals and historical_baseline. The core logic evaluates exposure through open relay checks, port posture, SPF/DKIM/DMARC alignment, and indicators of abuse; it then assigns a risk_score (0–100) and a category (low/medium/high) and produces remediation_actions with concrete steps.
Outputs include risk_score, category, remediation_actions, and a detailed evidence summary. Optional historical comparison supports trend analysis, and threshold customization lets teams adapt risk appetite. The tool aligns with RFC standards and NIST security guidance for mail configurations, and it annotates uncertainty when data freshness is limited.
Use cases include onboarding new domains, third-party vendor risk assessments, security audits, and incident triage. Benefits are fast, repeatable assessments that yield actionable remediation guidance and auditable records without intrusive testing. Unique value lies in structured signal aggregation, explicit remediation playbooks, and clear uncertainty notes when baselines are outdated.