Cisco Cisco Email Security Appliance C190 Guia Do Utilizador

Because the regional rules profile optimizes the anti-spam engine for a 
particular region, it can reduce capture rates for other types of spam. 
Therefore, Cisco recommends you enable this feature only if you receive 
the bulk of your email from the specified region.

IronPort Anti-Spam leverages globally representative email and web 
content-agnostic data contributed by over 125,000 ISPs, universities and 
corporations throughout the Americas, Europe, and Asia. The Threat Operations 
Center is set up for global operations with centers in Sao Paulo, Beijing and 
London. In addition, analysts speak 32 languages including Chinese, Japanese, 
Korean, Portuguese, and Spanish.

You enable IronPort Anti-Spam and modify its global configuration settings using 
the Security Services > IronPort Anti-Spam and Security Services > Service 
Updates pages (GUI) or the 

antispamconfig

 and 

updateconfig

 commands (CLI). 

The following global settings are configured: 

Enable IronPort Anti-Spam globally for the appliance. 

Configure the thresholds for message scanning by IronPort Anti-Spam.

To optimize the throughput of your appliance while still being able to scan 
the increasing larger messages sent by spammers, you can define an always 
scan message size, where messages smaller than the defined size are 
completely scanned by CASE, delivering Cisco IronPort’s industry-leading 
level of efficacy, and a never scan message size, where messages larger than 
the defined size are not scanned by CASE. For messages larger than the 
always scan size and smaller than the never scan size, CASE performs a 
limited and faster scan.

If the Outbreak Filters maximum message size is greater than 
IronPort Anti-Spam’s always scan message, CASE fully scans 
messages smaller than the Outbreak Filters maximum size.