You need to have base machine images for the various roles (web server, E-mail server, database server, and so on) and to use tools like Chef or Puppet to automatically configure instances.

您需要有适用于各种角色(Web服务器、电子邮件服务器、数据库服务器等)的基础机器映像，并使用工具(如Chef或Puppet)来自动化配置实例。

youdao

When a machine is running a particular service, for example, a Web server, E-mail server, or peer-to-peer service, the machine must listen on a specific port.

当一台计算机正在运行某个特定的服务(例如，Web服务器、电子邮件服务器或者对等服务)时，该计算机必定会侦听某个特定的端口。

youdao

What exactly is happening that makes you think that the E-mail server is down?

究竟发生了什么事情令你认为邮件服务器坏了呢？

youdao

Rackspace has agreed to buy Mailgun, a San Francisco-based startup that provides e-mail server tools.

FORBES: Rackspace To Buy Mailgun

The calls for coordination became louder after the "I Love You" virus in May affected almost every federal e-mail server and taxed many agencies' resources.

CNN: U.S. government agencies shape cyberwarning strategy

Ballmer said the shift to online software and services will mean changes for all of Microsoft's businesses, which range from desktop productivity tools to database and e-mail server software.

FORBES: Microsoft's Cannibal Sacrifice