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Nếu không, Outlook đánh giá các thông điệp chống lại bất kỳ bên thứ ba, chống rác sản phẩm e-mail hoặc plug-in đã được cấu hình ở lớp vận chuyển. Các sản phẩm của bên thứ ba phân tích các tin nhắn và gán cho nó một giá trị Spam Confidence Level (SCL) cho biết mức độ | 14-10 Chapter 14 Troubleshooting Microsoft Exchange Server 2003 Sometimes an X.400 connector is the solution rather than the problem. By default Exchange Server 2003 routing groups are connected by routing connectors. If however the connection is unreliable or non-persistent a demand-dial connection for example then transfer reliability can be improved by using an X.400 connection which uses message-based data transfer rather than remote procedure call RPC . You also need to take care how you specify encoding formats for your POP3 and Internet Message Protocol version 4 IMAP4 clients on the relevant virtual servers. This was discussed in Chapter 9 Virtual Servers. If your clients use UNIX to UNIX encoding uuencode then your virtual servers need to be set up appropriately. For Macintosh clients you need to specify uuencode and then select BinHex for Macintosh. Microsoft Outlook users tend to take calendaring for granted because it is a built-in Outlook function. However the Calendar Connector s properties are set not to synchronize calendar data by default. Thus when Outlook users attempt to view the schedules of users on foreign systems for example Lotus Notes the information could be out of date. Exam Tip If you get a question about interaction with a foreign system read it carefully to determine if you are getting no communication with the foreign system in which case a connector is down or a virtual server has failed. If on the other hand you are getting a connection but the messages are garbled then the encoding format may be specified incorrectly. Practice Using the Netdiag and Dcdiag Command-Line Utilities The netdiag utility tests network connectivity. The tool lets you specify a number of optional parameters such as test to run a specific test and d to specify a domain. However it is typically run either with no parameters or with the fix switch to repair minor errors and the debug switch to give detailed output. The output from the tool can be redirected .
