update

ts/mail/delivery/smtpserver/smtp-server.ts

@@ -370,7 +370,16 @@ export class SmtpServer implements ISmtpServer {
         );
       }
       
-      await Promise.all(closePromises);
+      // Add timeout to prevent hanging on close
+      await Promise.race([
+        Promise.all(closePromises),
+        new Promise<void>((resolve) => {
+          setTimeout(() => {
+            SmtpLogger.warn('Server close timed out after 3 seconds, forcing shutdown');
+            resolve();
+          }, 3000);
+        })
+      ]);
       
       this.server = null;
       this.secureServer = null;
@@ -774,12 +783,20 @@ export class SmtpServer implements ISmtpServer {
     
     await Promise.all(destroyPromises);
     
+    // Destroy the adaptive logger singleton to clean up its timer
+    const { adaptiveLogger } = await import('./utils/adaptive-logging.js');
+    if (adaptiveLogger && typeof adaptiveLogger.destroy === 'function') {
+      adaptiveLogger.destroy();
+    }
+    
     // Clear recovery state
     this.recoveryState = {
       recovering: false,
-      currentRecoveryAttempt: 0,
+      connectionFailures: 0,
+      lastRecoveryAttempt: 0,
+      recoveryCooldown: 5000,
       maxRecoveryAttempts: 3,
-      lastError: null
+      currentRecoveryAttempt: 0
     };
     
     SmtpLogger.info('All SMTP server components destroyed');