[ 'db' => [ 'class' => \yii\db\Connection::class, 'dsn' => 'mysql:host=mysql-web;dbname=web', 'username' => 'root', 'password' => 'root', 'charset' => 'utf8', ], 'mailer' => [ 'class' => \yii\symfonymailer\Mailer::class, 'viewPath' => '@common/mail', // send all mails to a file by default. 'useFileTransport' => true, // You have to set // // 'useFileTransport' => false, // // and configure a transport for the mailer to send real emails. // // SMTP server example: // 'transport' => [ // 'scheme' => 'smtps', // 'host' => '', // 'username' => '', // 'password' => '', // 'port' => 465, // 'dsn' => 'native://default', // ], // // DSN example: // 'transport' => [ // 'dsn' => 'smtp://user:pass@smtp.example.com:25', // ], // // See: https://symfony.com/doc/current/mailer.html#using-built-in-transports // Or if you use a 3rd party service, see: // https://symfony.com/doc/current/mailer.html#using-a-3rd-party-transport ], ], ];