Anti-spam updates in Forefront Security for Exchange Server

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INTRODUCTION

This article discusses anti-spam updates in Microsoft Forefront Security for Exchange Server.

To maintain consistent spam protection over time, you must make sure that anti-spam filters are updated.

Microsoft Exchange Server 2007 uses the proven Microsoft Update infrastructure to obtain anti-spam filter updates. Administrators can visit the Microsoft Update Web site to retrieve content filter updates. These updates are published every two weeks.

Enterprise client access license (CAL) customers are offered an increased level of protection. Spam filter updates are more frequent and diverse for Enterprise CAL customers.

For more information about Exchange Server 2007 editions and about client access licenses, visit the following Microsoft Web site:

http://www.microsoft.com/exchange/evaluation/editions.mspx (http://www.microsoft.com/exchange/evaluation/editions.mspx)

The following table describes the levels of protection that are offered to Enterprise CAL customers and to Standard CAL customers.

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Update type	Standard CAL	Enterprise CAL
Content filter definitions	Bi-weekly	Daily
Spam signatures	Not applicable	As needed: could be multiple times a day
IP reputation	Not applicable	Multiple times a day

For more information about how to configure anti-spam automatic updates, visit the following Microsoft Web site:

http://technet.microsoft.com/en-us/library/bb125199.aspx (http://technet.microsoft.com/en-us/library/bb125199.aspx)

For more information about how to enable Forefront Security anti-spam updates, visit the following Microsoft Web site:

http://msexchangeteam.com/archive/2007/01/03/432050.aspx (http://msexchangeteam.com/archive/2007/01/03/432050.aspx)