added health scores

Author: name

Cargo.lock

@@ -6,5 +6,5 @@ edition = "2021"
 [dependencies]
 clap = { version = "4.3", features = ["derive"] }
 tokio = { version = "1", features = ["full"] }
-trust-dns-resolver = "0.23.2"
+trust-dns-resolver = { version = "0.23.2", features = ["dns-over-https-rustls"] }
 prettytable-rs = "^0.10"

Cargo.toml

@@ -1,13 +1,15 @@
 # Domain Health (dh) CLI Tool
 
-A command-line interface tool for checking the email security configuration of a domain.
+A command-line interface tool for checking and scoring the email security configuration of a domain.
 
 ## Features
 
 - Checks mail provider (e.g., Google, Microsoft, Mimecast)
 - Verifies SPF (Sender Policy Framework) records
 - Checks DMARC (Domain-based Message Authentication, Reporting, and Conformance) configuration
 - Verifies DKIM (DomainKeys Identified Mail) records
+- Calculates a health score based on SPF, DMARC, and DKIM configurations
+- Provides suggestions for improving email security
 - Displays an easy-to-read summary of domain email security
 
 ## Usage
@@ -31,6 +33,33 @@ The tool provides a formatted table output including:
 - SPF record status and trusted senders
 - DMARC configuration
 - DKIM record status
+- Overall health score (out of 100)
+- Breakdown of the health score
+- Suggestions for improvement
+
+### Example Outputs
+
+#### Healthy Domain Configuration
+
+![Healthy Domain Output](images/healthy.png)
+
+#### Unhealthy Domain Configuration
+
+![Unhealthy Domain Output](images/unhealthy.png)
+
+## Health Score Calculation
+
+The health score is calculated based on the following criteria:
+
+- SPF: Up to 33 points
+  - 33 points for valid SPF with hard fail (-all)
+  - 29 points for valid SPF with soft fail (~all)
+  - 25 points for valid SPF without explicit fail
+- DMARC: Up to 34 points
+  - 34 points for p=reject
+  - 25 points for p=quarantine
+  - 20 points for p=none or no policy specified
+- DKIM: 33 points for valid DKIM record
 
 ## Requirements