fix(email): parse SMTP port as integer and increase timeouts

- Parse SMTP_PORT to integer with fallback to 465 to prevent type errors
- Increase connection and greeting timeouts from 10s to 20s for reliability
- Add debug logging and TLS option to help diagnose SMTP connection issues

src/notifications/email.service.ts

@@ -10,18 +10,23 @@ export class EmailService {
   constructor(private readonly configService: ConfigService) {
     this.transporter = nodemailer.createTransport({
       host: this.configService.get("SMTP_HOST"),
-      port: this.configService.get("SMTP_PORT"),
+      port: parseInt(this.configService.get("SMTP_PORT") || "465", 10),
       secure: this.configService.get("SMTP_SECURE") === "true",
       pool: true,
       maxConnections: 5,
       maxMessages: 100,
-      connectionTimeout: 10000, // 10 seconds
-      greetingTimeout: 10000,
+      connectionTimeout: 20000,
+      greetingTimeout: 20000,
       socketTimeout: 30000,
+      debug: true,
+      logger: true,
       auth: {
         user: this.configService.get("SMTP_USER"),
         pass: this.configService.get("SMTP_PASS"),
       },
+      tls: {
+        rejectUnauthorized: false, // Help with some SMTP issues
+      },
     });
   }