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使用Exchange IMF引擎过滤垃圾邮件

来源:互联网 作者:west263.com 时间:2008-02-23
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Before you can make use of the CWF you need to register the MSExchange.UceContentFilter.dll file, you do this by opening a command prompt then issue the following command:
regsvr32 Drive_letter:\Program Files\Exchsrvr\bin\MSCFV2\MSExchange.UceContentFilter.dll
When the MSExchange.UceContentFilter.dll file has been registered you can start to add words or phrases to the MSExchange.UceContentFilter.xml, normally Notepad would be sufficient for this task (just make sure you save the file as a .xml in the Unicode format!)
Below is an example of specific phrases and values you can use in the MSExchange.UceContentFilter.xml file.
<?xml version="1.0" encoding="UTF-16"?>
<CustomWeightEntries xmlns="http://schemas.microsoft.com/2005/CustomWeight">
<CustomWeightEntry Type="BODY" Change="1" Text="Tortured with health problems?"/>
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<CustomWeightEntry Type="BODY" Change="-2" Text=" Cigar Sampler and Bonus Gifts for Xmas"/>
<CustomWeightEntry Type="BODY" Change=”4" Text="Special offer"/>
<CustomWeightEntry Type="BODY" Change="-7" Text="Gratis piller"/>
<CustomWeightEntry Type="SUBJECT" Change="MIN" Text="Free Pills"/>
<CustomWeightEntry Type="BOTH" Change="MAX" Text="Cheap Viagra"/>
</CustomWeightEntries>
In Table below I have listed each CWF value which can be used in the MSExchange.UceContentFilter.xml file.
Value
Description
Type=”BODY”
Search for value specified in text in the BODY field of the message
Type=”SUBJECT”
Search for value specified in text in the SUBJECT field of the message
Type=”BOTH”
Search for value specified in text in the BODY and SUBJECT field of the message
Change
The Change value is used to define what effect a matched word or phrase will have alt="" src="/upimg/allimg/070523/1612113.gif" border=0>
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When you have created the registry key shown in figure above you need to restart the SMTP service in order to make the IMF update feature become effective.

The IMF updates will be available every first and third Wednesday of the month through Windows Update, Automatic Updates, WSUS and SMS technologies, and as you can see in following figure below the first IMF update is already available for approval via Windows Update, Automatic Updates as well as WSUS.

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4IMF integrate with Outlook

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After a message makes it past server-based anti-spam defenses, the Outlook 2003 client can act>Outlook 2003 and Outlook Web Access for Exchange Server 2003 also allow users to create a list of safe senders from whom users always want to accept e-mail messages, as well as a list of blocked senders from whom users always want to reject e-mail messages. At the mailbox store, regardless of the SCL rating assigned to the message, Exchange delivers all messages from safe senders to the user's inbox and all messages from blocked senders to the user's junk e-mail folder. However, if the e-mail message has been blocked by the gateway threshold, it is not delivered to the user's inbox because the message is never delivered to the mailbox store.

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