Symantec Message Filter software can be deployed in a variety of computing environments, from single computer setups to distributed client-server configurations. In each case, the Symantec Message Filter Client integration communicates with the MTA by using standard libraries. As messages flow through the mail server, the Client calls the Server. The Server checks individual messages against antispam filters, antivirus definitions, and other filters that you configure. Based on the verdict that the Server returns and the Server and the configuration options that you configure, the mail may be handled differently.
Table: Configuration scenarios with the Client/MTA integration and the Server summarizes the configurations in general terms.
Table: Configuration scenarios with the Client/MTA integration and the Server
If your environment has a high volume of traffic, consider to use Symantec Traffic Shaper. This network device allocates reduced bandwidth to MTAs that deliver spam. The load on your MTAs is reduced without introducing false positive risks. For more information about Symantec Traffic Shaper, contact your Symantec sales representative.