syntax:*authhttp**URL_*

default:*no*

context:*mail, server*

With this directive you can set the URL to the external HTTP-like server for authorization. A description of the protocol can be found . 使用这条指令你可以设置URL像HTTP服务器那样的验证。协议描述可以看 这里

default:*no*

context:*mail, server*

With this directive you can add a HTTP header and value during the identification process. This makes it possible to use a shared secret to ensure that the request was answered by nginx. 使用这条指令你可以添加HTTP头和值到验证进程中。这个使得可以用共享密码来却不请求得到Nginx的响应

For example:

default:*60000*

context:*mail, server*

With this directive you can set the time out for authentication process. 使用这条指令你可以设置验证进程的超时时间