如果出现无法注册或收不到验证邮件只需把

 'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            'viewPath' => '@common/mail',
            // send all mails to a file by default. You have to set
            // 'useFileTransport' to false and configure a transport
            // for the mailer to send real emails.
            'useFileTransport' => false, 
            'transport' => [ 
                'class' => 'Swift_SmtpTransport', 
                'host' => 'smtp.163.com', 
                'username' => '***@163.com', 
                'password' => '******', 
                'port' => '25', 
                'encryption' => 'tls', 
            ], 
        ],

改为

 'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            'viewPath' => '@common/mail',
            // send all mails to a file by default. You have to set
            // 'useFileTransport' to false and configure a transport
            // for the mailer to send real emails.
            'useFileTransport' => false, 
            'transport' => [ 
                'class' => 'Swift_SmtpTransport', 
                'host' => 'smtp.163.com', 
                'username' => '***@163.com', 
                'password' => '******', 
                'port' => '25', 
                'encryption' => '', 
            ], 
        ],

如果出现无法注册或收不到验证邮件只需把

 'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            'viewPath' => '@common/mail',
            // send all mails to a file by default. You have to set
            // 'useFileTransport' to false and configure a transport
            // for the mailer to send real emails.
            'useFileTransport' => false, 
            'transport' => [ 
                'class' => 'Swift_SmtpTransport', 
                'host' => 'smtp.163.com', 
                'username' => '***@163.com', 
                'password' => '******', 
                'port' => '25', 
                'encryption' => 'tls', 
            ], 
        ],

改为

 'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            'viewPath' => '@common/mail',
            // send all mails to a file by default. You have to set
            // 'useFileTransport' to false and configure a transport
            // for the mailer to send real emails.
            'useFileTransport' => false, 
            'transport' => [ 
                'class' => 'Swift_SmtpTransport', 
                'host' => 'smtp.163.com', 
                'username' => '***@163.com', 
                'password' => '******', 
                'port' => '25', 
                'encryption' => '', 
            ], 
        ],