update

ts/mail/delivery/interfaces.ts

@@ -140,6 +140,11 @@ export interface ISmtpSession {
    * Timestamp of last activity for session timeout tracking
    */
   lastActivity?: number;
+  
+  /**
+   * Timeout ID for DATA command timeout
+   */
+  dataTimeoutId?: NodeJS.Timeout;
 }
 
 /**
@@ -186,11 +191,31 @@ export interface ISmtpServerOptions {
    */
   hostname?: string;
   
+  /**
+   * Host address to bind to (defaults to all interfaces)
+   */
+  host?: string;
+  
+  /**
+   * Secure port for dedicated TLS connections
+   */
+  securePort?: number;
+  
+  /**
+   * CA certificates for TLS (PEM format)
+   */
+  ca?: string;
+  
   /**
    * Maximum size of messages in bytes
    */
   maxSize?: number;
   
+  /**
+   * Maximum number of concurrent connections
+   */
+  maxConnections?: number;
+  
   /**
    * Authentication options
    */
@@ -207,14 +232,37 @@ export interface ISmtpServerOptions {
   };
   
   /**
-   * Socket timeout in milliseconds (default: 5 minutes)
+   * Socket timeout in milliseconds (default: 5 minutes / 300000ms)
    */
   socketTimeout?: number;
   
   /**
-   * Initial connection timeout in milliseconds (default: 30 seconds)
+   * Initial connection timeout in milliseconds (default: 30 seconds / 30000ms)
    */
   connectionTimeout?: number;
+  
+  /**
+   * Interval for checking idle sessions in milliseconds (default: 5 seconds / 5000ms)
+   * For testing, can be set lower (e.g. 1000ms) to detect timeouts more quickly
+   */
+  cleanupInterval?: number;
+  
+  /**
+   * Maximum number of recipients allowed per message (default: 100)
+   */
+  maxRecipients?: number;
+  
+  /**
+   * Maximum message size in bytes (default: 10MB / 10485760 bytes)
+   * This is advertised in the EHLO SIZE extension
+   */
+  size?: number;
+  
+  /**
+   * Timeout for the DATA command in milliseconds (default: 60000ms / 1 minute)
+   * This controls how long to wait for the complete email data
+   */
+  dataTimeout?: number;
 }
 
 /**