Cisco Cisco Email Security Appliance C190 ユーザーガイド

Extensive message filtering technology allows you to enforce corporate policy and act on specific 
messages as they enter or leave your corporate infrastructure. 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, blind 
carbon copied, or altered, or to generate notifications.

Message encryption via secure SMTP over Transport Layer Security ensures messages traveling 
between your corporate infrastructure and other trusted hosts are encrypted. 

Virtual Gateway™ technology allows the Email Security appliance to function as several email 
gateways within a single server, which allows you to partition email from different sources or 
campaigns to be sent over separate IP addresses. This ensures that deliverability issues affecting one 
IP address do not impact others.

AsyncOS supports RFC 2821-compliant Simple Mail Transfer Protocol (SMTP) to accept and deliver 
messages. 

Most reporting, monitoring, and configuration commands are available through both the web-based GUI 
via HTTP or HTTPS. In addition, an interactive Command Line Interface (CLI) which you access from 
a Secure Shell (SSH) or direct serial connection is provided for the system. 

You can also set up a Security Management appliance to consolidate reporting, tracking, and quarantine 
management for multiple Email Security appliances. 

AsyncOS can display its GUI and CLI in any of the following languages:

English

French

Spanish

German

Italian

Korean

Japanese

Portuguese (Brazil)

Chinese (traditional and simplified)

Russian