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How do you block spam using Microsoft Exchange Server 2003?

Please Note: The following instructions involve Sender Filter.  Sender Filter like all Microsoft Exchange Filters will only work if your Server is configured to use the SMTP Virtual Server.  If you are using the SMTP Connector, Exchange Filters are not applied to incoming email.  The only way of blocking email received by a Microsoft Exchange Server using the SMTP Connector is to address the problem using your Email Provider's webmail application.  For example if your incoming email is hosted by Yahoo, you would login to each individual webmail account and block the spam by domain or individual email address.  Please be aware that a small number of Email Providers do not use a Real Time Block list (RBL) nor do they provide their customers with webmail which allows them to block spam by domain or individual email address.  In those instances, you may want to switch to a professional Email Provider such as Yahoo Mail or Google Gmail.  You would then use Microsoft Exchange SMTP Connector to retrieve email from a professional Email Provider.  Another option would be to use the Microsoft Outlook Blocked Sender List.


Enable Sender Filter
  1. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.

  2. Expand Servers, expand ServerName, and then expand Protocols.

  3. Expand SMTP, right-click Default SMTP Virtual Server, and then click Properties.

  4. Click the General tab, and then click Advanced.

  5. In the Address list, click the IP address where you want to apply the sender filter, and then click Edit.

  6. Click to select the Apply Sender Filter check box, click OK, and then click OK.
Configure Sender Filter - To Block Email Addresses by Sender:
  1. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.

  2. Expand Global Settings, right-click Message Delivery, and then click Properties.

  3. Click the Sender Filtering tab, and then click Add.

  4. Type the email address of the Sender and then click OK.

  5. Specify any additional filter options that you want to configure, and then click OK.
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