Cisco Cisco Email Security Appliance C170 사용자 가이드

products to meet the needs of large-scale enterprises. Conversely, the 
efficiency of the engine allows for implementation on low-cost hardware, 
making IronPort’s security services attractive for low-end customers.

Off-box network calculations

IronPort Anti-Spam is tuned to deliver industry-leading efficacy world-wide. In 
addition to locale-specific content-aware threat detection techniques, you can 
further optimize anti-spam scanning for specific regions using regional rules 
profiles. The anti-spam engine includes a regional rules profile. The regional rules 
profile targets spam on a regional basis. For example, China and Taiwan receive 
a high percentage of spam in traditional or modern Chinese. The Chinese regional 
rules are optimized for this type of spam. IronPort strongly recommends you use 
the Chinese regional rules profile if you receive mail primarily for mainland 
China, Taiwan, and Hong Kong. You can enable the regional rules profile from 
Security Services > IronPort Anti-Spam. 

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, IronPort 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.