exchange2013安装完成后，默认存在5个接收连接器。
| 接收连接器名称 | 角色 |
| Client Frontend EXCHANGE2013 | FrontendTransport |
| Client Proxy EXCHANGE2013 | Hub Transport |
| Default EXCHANGE2013 | Hub Transport |
| Default Frontend EXCHANGE2013 | FrontendTransport |
| Outbound Proxy Frontend EXCHANGE2013 | FrontendTransport |
原文：http://bianshao.blog.51cto.com/290828/1598095