Руководство Пользователя для Cisco Cisco Email Security Appliance C170

 describes the possible ports that may need to 

be opened for proper operation of the Cisco IronPort appliance behind a security 
firewall. 

includes the software license agreement for the Cisco IronPort Email Security 
appliance.

The following topics are discussed in the Cisco IronPort AsyncOS for Email 
Advanced Configuration Guide: 

Chapter 1, “Customizing Listeners” describes the process for tailoring the 
configuration of your Enterprise Email Gateway. This chapter discusses, in detail, 
advanced features available to you as you configure interfaces and listeners to 
handle email receiving through the gateway. 

Chapter 2, “Configuring Routing and Delivery Features” explains the features 
that affect email routing and delivery of email traveling through the Cisco 
IronPort appliance. 

Chapter 3, “LDAP Queries” describes how your Cisco IronPort appliance can 
connect to your corporate Lightweight Directory Access Protocol (LDAP) servers 
and perform queries for the purposes of verifying recipients to accept (including 
group membership), mail routing and address rewriting. masquerading headers, 
and supporting for SMTP authentication. 

Chapter 4, “Email Authentication” details the process of configuring and enabling 
email authentication on an Cisco IronPort appliance. Cisco IronPort AsyncOS 
supports several types of email authentication, including Sender Policy 
Framework (SPF), Sender ID Framework (SIDF), and DomainKeys Identified 
Mail (DKIM) verification of incoming mail, as well as DomainKeys and DKIM 
signing of outgoing mail.

Chapter 5, “Using Message Filters to Enforce Email Policies” describes how to 
use Message Filters to define rules for handling email, including the ability to 
modify the content of messages through the attachment filtering, image analysis, 
and content dictionary features.