Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

http, https, or www

domain or IP address 

port number preceded by a colon (:) 

uppercase or lowercase letters 

When evaluating URLs to determine whether a message is spam, if necessary for load management, the 
system prioritizes screening of incoming messages over outgoing messages. 

In addition to enabling URL filtering, you must enable other features depending on desired functionality.

For enhanced protection against spam: 

Anti-spam scanning must be enabled globally and per applicable mail policy. This can be either the 
IronPort Anti-Spam or the Intelligent Multi-Scan feature. See the anti-spam chapter. 

For enhanced protection against malware: 

The Outbreak Filters feature must be enabled globally and per applicable mail policy. See the 
Outbreak Filters chapter. 

To take action based on URL reputation, or to enforce acceptable use policies using message and content 
filters: 

The Outbreak Filters feature must be enabled globally. See the Outbreak Filters chapter. 

Ensure that the requirements for the individual URL filtering features that you want to use have been 
met. See 

(Optional) Create a list of URLs that you want all URL filtering functionalities to ignore. See 

. 

Select Security Services > URL Filtering.