django框架 阿里云服务器使用邮箱发送验证码无效问题， 报错：[Errno 101] Network is unreachable

settings配置如下：

        

EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.qq.com'
EMAIL_PORT = 25
EMAIL_HOST_USER = 'test@qq.com'
EMAIL_HOST_PASSWORD = '********'
EMAIL_USE_TLS = True

部署到阿里云服务器上后发送邮件报错，错误为： [Errno 101] Network is unreachable

解决方案如下，端口号改为587即可：

EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.qq.com'
EMAIL_PORT = 587
EMAIL_HOST_USER = 'test@qq.com'
EMAIL_HOST_PASSWORD = '********'
EMAIL_USE_TLS = True