Руководство Пользователя для Cisco Cisco Email Security Appliance C170

Masquerading is a feature that rewrites the envelope sender (also known as the 
sender, or 

MAIL FROM

) and the To:, From:, and/or CC: headers on email processed 

by a private listener according to a table you construct. You can specify different 
masquerading parameters for each listener you create in one of two ways: via a 
static mapping table, or via an LDAP query.

For more information about masquerading via a static mapping table, see 
“Configuring Masquerading” in the “Configuring Routing and Delivery Features” 
chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.

For more information about masquerading via an LDAP query, see the “LDAP 
Queries” chapter in the Cisco IronPort AsyncOS for Email Advanced 
Configuration Guide. 

You can configure your IronPort appliance to route messages to the appropriate 
address and/or mail host based upon the information available in LDAP 
directories on your network.

For more information, see “LDAP Queries” in the Cisco IronPort AsyncOS for 
Email Advanced Configuration Guide.

Message filters allow you to create special rules describing how to handle 
messages and attachments as they are received. Filter rules identify messages 
based on message or attachment content, information about the network, message 
envelope, message headers, or message body. Filter actions allow messages to be 
dropped, bounced, archived, quarantined, blind carbon copied, or altered.

For more information, see the “Using Message Filters to Enforce Email Policies” 
chapter in the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.

Multi-recipient messages are “splintered” after this phase, prior to Email Security 
Manager. Splintering messages refers to creating splinter copies of emails with 
single recipients, for processing via Email Security Manager.