fix security issues with smtp

apps/smtp-server/tsup.config.ts

@@ -0,0 +1,13 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { defineConfig, Options } from "tsup";
+
+// eslint-disable-next-line import/no-default-export
+export default defineConfig((options: Options) => ({
+  entry: ["src/server.ts"],
+  format: ["cjs"],
+  dts: true,
+  minify: true,
+  clean: true,
+  injectStyle: true,
+  ...options,
+}));