Cisco Cisco Email Security Appliance C160 Mode D'Emploi

The Email Pipeline is the process or flow email follows as it is processed by the Cisco IronPort 
appliance. Understanding the Email Pipeline is essential to getting the best performance from your Cisco 
IronPort appliance.

This chapter provides an overview of the Email Pipeline for incoming mail and a brief description of 
each feature. The brief description also includes a link to the chapter or book containing a detailed 
explanation of the feature.

 and 

 provide an overview of how email is processed through the system, from 

reception to routing to delivery. Each feature is processed in order (from top to bottom) and is briefly 
described below. A full description of each feature can be found in the following chapters. Some features 
are described in the Cisco IronPort AsyncOS for Email Advanced Configuration Guide and Cisco 
IronPort AsyncOS for Email Daily Management Guide.