将从网上下载的安装包解压缩到本地目录比如：c:\Inetpub\wwwroot\mail ②将文件保持路径不变，用FTP工具上传到你的网站上。-Will be downloaded the Internet to download the installation package to a local directory for example: c: \ Inetpub \ wwwroot \ mail ② keep the file path unchanged, using FTP to