<?php
/**
 * 邮件服务器默认配置
 */
return [
    // SMTP 服务配置 (接收邮件)
    'smtp' => [
        // 监听地址
        'host'         => env('MAIL_SMTP_HOST', '0.0.0.0'),
        // SMTP 端口 (25 标准端口)
        'port'         => (int)env('MAIL_SMTP_PORT', 25),
        // Submission 端口 (587，客户端发信用)
        'submission_port' => (int)env('MAIL_SUBMISSION_PORT', 587),
        // 主机名 (用于 HELO/EHLO 响应)
        'hostname'     => env('MAIL_HOSTNAME', 'mail.localhost'),
        // 单封邮件最大大小 (字节)，默认 25MB
        'max_message_size' => (int)env('MAIL_MAX_SIZE', 26214400),
        // 单次会话最大收件人数
        'max_recipients'   => (int)env('MAIL_MAX_RECIPIENTS', 100),
        // 连接超时 (秒)
        'timeout'      => (int)env('MAIL_SMTP_TIMEOUT', 300),
        // Worker 数量
        'worker_num'   => (int)env('MAIL_SMTP_WORKER', 4),
    ],

    // IMAP 服务配置 (读取邮件)
    'imap' => [
        'host'       => env('MAIL_IMAP_HOST', '0.0.0.0'),
        'port'       => (int)env('MAIL_IMAP_PORT', 143),
        'hostname'   => env('MAIL_HOSTNAME', 'mail.localhost'),
        'worker_num' => (int)env('MAIL_IMAP_WORKER', 2),
    ],

    // 邮件存储配置
    'storage' => [
        'type'    => env('MAIL_STORAGE_TYPE', 'maildir'),
        'path'    => env('MAIL_STORAGE_PATH', ''),
        'default_path' => 'runtime/mail',
    ],

    // 认证配置
    'auth' => [
        'type'       => env('MAIL_AUTH_TYPE', 'simple'),
        'require_auth_for_send' => true,
    ],

    // 域名配置
    'domains' => [
        'local' => explode(',', env('MAIL_LOCAL_DOMAINS', 'localhost')),
    ],

    // 日志配置
    'log' => [
        'level' => env('MAIL_LOG_LEVEL', 'info'),
    ],
];