我在服务器上安装osticket（用于控制项目的php开源程序） 我想在创建票证后发送电子邮件，但我无法配置它 我启用了smtp配置
host smtp:smtp.gmail.com
port:465
Authentication required: yes
email addres: my gmail account
pass: my gmail pass
username: my gmail account
但保存配置后出错
Failed to connect to smtp.gmail.com:465 [SMTP: Failed to connect socket: Permission denied (code: -1, response