如果没有对代理进行适当地配置，那么当试图导入时将会对用户显示出错误消息，如图17所示。
If the agent is not properly configured, an error message will be displayed to the user when attempting the import, as shown in figure 17.
使用定制代理的一个常见场景是名称查找，其中SAP用户可以以SAP用户ID的形式在进入的消息中呈现出来。
One common scenario for using custom agents is name lookups, where SAP users can be represented in an incoming message with their SAP user IDs.
邮件传输代理从另一个邮件传输代理、邮件用户代理或邮件提交代理处接收消息。
The mail transfer agent receives the messages from another mail transfer agent, a mail user agent, or a mail submission agent.
服务器端消息接收者可作为客户端的代理，调用实际的用户定义的服务方法。
The server-side message receiver functions as a proxy for the client, calling the actual user-defined service method.
UAS 将通过确认信息所经过的相同路由发送一个BYE消息，从而发起关闭操作，另一个用户代理将发送一个 200OK响应来确认此消息。
The UAS initiates the closing by sending a BYE message over the same route that the acknowledgement came over and the other user agent acknowledges this message by sending a 200 OK response.
图4显示了当IM代理连接到服务器并与定义用户开始会话时创建的消息传递弹出窗口。
Figure 4 shows the messaging pop-up window created when your IM agent connects to the server and begins a conversation with the defined user.
图4显示了当IM代理连接到服务器并与定义用户开始会话时创建的消息传递弹出窗口。
Figure 4 shows the messaging pop-up window created when your IM agent connects to the server and begins a conversation with the defined user.
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