请教邮件配置

使用WPJAM Basic 插件。设置如下图：测试发送失败。求教高手。谢谢。

object(WP_Error)#7597 (2) { ["errors"]=> array(1) { ["wp_mail_failed"]=> array(1) { [0]=> string(82) "SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting" } } ["error_data"]=> array(1) { ["wp_mail_failed"]=> array(6) { ["to"]=> array(1) { [0]=> string(17) "cuikaiyun@163.com" } ["subject"]=> string(12) "测试邮件" ["message"]=> string(15) "测试邮件。" ["headers"]=> array(0) { } ["attachments"]=> array(0) { } ["phpmailer_exception_code"]=> int(2) } } }