Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

You can configure your Cisco 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.

End user safelists and blocklists are created by end users and stored in a database 
that is checked prior to anti-spam scanning. Each end user can identify domains, 
sub domains or email addresses that they wish to always treat as spam or never 
treat as spam. If a sender address is part of an end users safelist, anti-spam 
scanning is skipped, and if the sender address is listed in the blocklist, the 
message may be quarantined or dropped depending on administrator settings. For 
more information about configuring safelists and blocklists, see the 
“Quarantines” chapter in the Cisco IronPort AsyncOS for Email Daily 
Management Guide.