📧 Email Authentication Checker v1.5

A PowerShell tool for comprehensive SPF, DKIM, and DMARC analysis.

🚀 Quick Start

Set-ExecutionPolicy RemoteSigned -Scope CurrentUser
.\EmailAuthChecker.ps1

Input Options: Single domain, multiple domains (comma-separated), file input, or email headers

✨ Key Features

Security Analysis (19 Checks)

Protocol	Checks	Max Points
SPF	9 checks (syntax, DNS optimization, macro security)	40 pts
DKIM	5 checks (selectors, key strength, validation)	30 pts
DMARC	5 checks (policy, reporting, alignment)	30 pts

Scoring & Status

• 🏆 Excellent (95-100): Requires DMARC p=reject
• ✅ Good (80-94) | ⚠️ Fair (60-79) | ❌ Poor (40-59) | 🚨 Critical (<40)

New in v1.5

• MX Record Analysis: Mail server configuration and provider detection
• Email Provider Detection: Microsoft 365, Google, AWS SES, etc.
• Streamlined Reporting: Clean output with reduced noise

📊 Output

• Console: Real-time analysis progress
• HTML Report: Interactive dashboard with security scores and recommendations
• Microsoft Links: Direct documentation for remediation

🔧 Requirements

Component	Requirement
PowerShell	5.1+ (Windows) or Core (Cross-platform)
OS	Windows 10+, Linux, macOS
Network	Internet access for DNS queries

📚 Documentation

• QUICKSTART.md - 5-minute setup guide
• INSTRUCTIONS.md - Comprehensive usage guide

🛠️ Troubleshooting

Issue	Solution
Script won't run	Set-ExecutionPolicy RemoteSigned
DNS timeouts	Run as Administrator
Permission errors	Use elevated PowerShell

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Version 1.5 | MIT License | Author: Abdullah Zmaili