Builting ZoneMTA with the plugins

zone-mta

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-Subproject commit 7990c49dda71c8cb65ddd83da3b785711d26894b

zone-mta/config/zonemta.js

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+module.exports = {
+
+
+    // This is the main config file
+    name: 'ZoneMTA',
+
+    // Process identifier
+    ident: 'zone-mta',
+
+    // Run as the following user. Only use this if the application starts up as root
+    // user: "zonemta"
+    // group: "zonemta"
+
+    log: {
+        level: 'info'
+    },
+
+    dbs: {
+        // MongoDB connection string
+        mongo: 'mongodb://127.0.0.1:27017/zone-mta',
+
+        // Redis connection string
+        redis: 'redis://localhost:6379/2',
+
+        // Database name for ZoneMTA data in MongoDB. In most cases it should be the same as in the connection string
+        sender: 'zone-mta'
+    },
+
+    api: {
+        maildrop: false,
+        user: 'mailtrain',
+        pass: 'mailtrain'
+    },
+
+    smtpInterfaces: {
+        // Default SMTP interface for accepting mail for delivery
+        feeder: {
+            enabled: true,
+
+            // How many worker processes to spawn
+            processes: 1,
+
+            // Maximum allowed message size 30MB
+            maxSize: 31457280,
+
+            // Local IP and port to bind to
+            host: '127.0.0.1',
+            port: 2525,
+
+            // Set to true to require authentication
+            // If authentication is enabled then you need to use a plugin with an authentication hook
+            authentication: true,
+
+            // How many recipients to allow per message
+            maxRecipients: 1,
+
+            // Set to true to enable STARTTLS. Do not forget to change default TLS keys
+            starttls: false,
+
+            // set to true to start in TLS mode if using port 465
+            // this probably does not work as TLS support with 465 in ZoneMTA is a bit buggy
+            secure: false,
+        }
+    },
+
+    plugins: {
+        "core/email-bounce": false,
+        "core/http-bounce": {
+            enabled: "main",
+            url: "http://localhost:3000/webhooks/zone-mta"
+        },
+        "core/default-headers": {
+            enabled: ["receiver", "main", "sender"],
+            futureDate: false,
+            xOriginatingIP: false
+        },
+        'mailtrain-main': {
+            enabled: ['main']
+        },
+        'mailtrain-receiver': {
+            enabled: ['receiver'],
+            username: 'mailtrain',
+            password: 'mailtrain'
+        }
+    },
+
+    zones: {
+        default: {
+            preferIPv6: false,
+            ignoreIPv6: true,
+            processes: 1,
+            connections: 5,
+            pool: 'default'
+        }
+    }
+
+};

zone-mta/index.js

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+'use strict';
+
+// start the app
+require('zone-mta');

zone-mta/package.json

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+{
+    "name": "mailtrain-zone-mta",
+    "private": true,
+    "version": "1.0.0",
+    "description": "Mailtrain builtin ZoneMTA instance",
+    "main": "index.js",
+    "scripts": {
+        "start": "node index.js --config=config/zonemta.js"
+    },
+    "keywords": [],
+    "license": "GPL-3.0",
+    "homepage": "https://mailtrain.org/",
+    "engines": {
+        "node": ">=10.0.0"
+    },
+    "dependencies": {
+        "zone-mta": "1.13.3",
+        "zonemta-delivery-counters": "1.0.1",
+        "zonemta-limiter": "1.0.0",
+        "zonemta-loop-breaker": "1.0.2"
+    }
+}

zone-mta/plugins/mailtrain-main.js

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+'use strict';
+
+// Set module title
+module.exports.title = 'Mailtrain integration (main)';
+
+// Initialize the module
+module.exports.init = (app, done) => {
+
+    process.send({
+        type: 'zone-mta-started'
+    });
+
+    done();
+};

zone-mta/plugins/mailtrain-receiver.js

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+'use strict';
+
+// Set module title
+module.exports.title = 'Mailtrain integration (receiver)';
+
+// Initialize the module
+module.exports.init = (app, done) => {
+
+    app.addHook('message:headers', (envelope, messageInfo, next) => {
+        const headers = envelope.headers;
+
+        if (!envelope.dkim.keys) {
+            envelope.dkim.keys = [];
+        }
+
+        const dkimHeaderValue = headers.getFirst('x-mailtrain-dkim');
+
+        if (dkimHeaderValue) {
+            const dkimKey = JSON.parse(dkimHeaderValue);
+
+            envelope.dkim.keys.push(dkimKey);
+
+            headers.remove('x-mailtrain-dkim');
+        }
+
+        return next();
+    });
+
+    app.addHook('smtp:auth', (auth, session, next) => {
+        if (auth.username === app.config.username && auth.password === app.config.password) {
+            next();
+        } else {
+            // do not provide any details about the failure
+            const err = new Error('Authentication failed');
+            err.responseCode = 535;
+            return next(err);
+        }
+    });
+
+    // all set up regarding this plugin
+    done();
+};