dockerize smtp-proxy (#118)

apps/smtp-server/Dockerfile

@@ -0,0 +1,45 @@
+# Stage 1: Build stage
+FROM node:20-alpine AS builder
+
+# Install pnpm (package manager) globally
+RUN npm install -g pnpm
+
+# Set working directory for the application
+WORKDIR /app
+
+# Copy configuration files first
+COPY package.json tsconfig.json tsup.config.ts ./
+
+# Install dependencies (including devDependencies)
+RUN pnpm install
+
+# Copy the source code
+COPY src/ ./src/
+
+# Build the application
+RUN pnpm run build
+
+
+# Remove development dependencies to reduce size
+RUN pnpm prune --prod
+
+# Stage 2: Production stage
+FROM node:20-alpine AS production
+
+# Set working directory in the final image
+WORKDIR /app
+
+# Copy necessary files from the builder stage: production node_modules, build output, and package definition
+COPY --from=builder /app/node_modules ./node_modules
+
+# Copy only the necessary files from builder
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/package.json ./package.json
+
+
+# Expose SMTP ports (standard SMTP, SMTPS, and alternative ports)
+EXPOSE 25 465 587 2465 2587
+
+
+# Run the SMTP server
+CMD ["node", "dist/server.js"]

apps/smtp-server/docker-compose.yml

@@ -0,0 +1,29 @@
+name: unsend-smtp-server
+
+services:
+  smtp-server:
+    container_name: unsend-smtp-server
+    image: unsend/smtp-proxy:latest
+    # Pass necessary environment variables
+    environment:
+      SMTP_AUTH_USERNAME: "unsend" # can be anything, just use the same while sending emails
+      UNSEND_BASE_URL: "https://app.unsend.dev" # your self hosted unsend instance url
+
+      # Uncomment this if you have SSL certificates. port 465 and 2465 will be using SSL
+      # UNSEND_API_KEY_PATH: "/certs/server.key"
+      # UNSEND_API_CERT_PATH: "/certs/server.crt"
+    # If you have SSL certificates, mount them here (read-only recommended)
+
+    # volumes:
+    #   - ./certs/server.key:/certs/server.key:ro
+    #   - ./certs/server.crt:/certs/server.crt:ro
+
+    # Expose the SMTP ports
+    ports:
+      - "25:25"
+      - "587:587"
+      - "2587:2587"
+      - "465:465"
+      - "2465:2465"
+    # Restart always or on-failure, depending on preference
+    restart: unless-stopped

apps/smtp-server/src/server.ts

@@ -81,10 +81,9 @@ const serverOptions: SMTPServerOptions = {
         replyTo: parsed.replyTo?.text,
       };
 
-      console.log("Parsed email data:", emailObject); // Debug statement
-
       sendEmailToUnsend(emailObject, session.user)
         .then(() => callback())
+        .then(() => console.log("Email sent successfully to: ", emailObject.to))
         .catch((error) => {
           console.error("Failed to send email:", error.message);
           callback(error);
@@ -104,18 +103,22 @@ const serverOptions: SMTPServerOptions = {
 };
 
 function startServers() {
-  // Implicit SSL/TLS for ports 465 and 2465
-  [465, 2465].forEach((port) => {
-    const server = new SMTPServer({ ...serverOptions, secure: true });
+  if (SSL_KEY_PATH && SSL_CERT_PATH) {
+    // Implicit SSL/TLS for ports 465 and 2465
+    [465, 2465].forEach((port) => {
+      const server = new SMTPServer({ ...serverOptions, secure: true });
 
-    server.listen(port, () => {
-      console.log(`Implicit SSL/TLS SMTP server is listening on port ${port}`);
-    });
+      server.listen(port, () => {
+        console.log(
+          `Implicit SSL/TLS SMTP server is listening on port ${port}`
+        );
+      });
 
-    server.on("error", (err) => {
-      console.error(`Error occurred on port ${port}:`, err);
+      server.on("error", (err) => {
+        console.error(`Error occurred on port ${port}:`, err);
+      });
     });
-  });
+  }
 
   // STARTTLS for ports 25, 587, and 2587
   [25, 587, 2587].forEach((port) => {

apps/smtp-server/src/usage.js

@@ -1,8 +1,8 @@
 const nodemailer = require("nodemailer");
 
 const transporter = nodemailer.createTransport({
-  host: "smtp.unsend.dev",
-  port: 2587,
+  host: "localhost",
+  port: 25,
   secure: false,
   auth: {
     user: "unsend",