Cisco Cisco Email Security Appliance C190 Guia Do Utilizador

The C300D appliance incorporates most of the latest AsyncOS features, many of 
which are of interest to C300D users. 

 lists some of these features:

DKIM/Domain Keys is a method for verifying 
authenticity of email based on a signing key used by 
the sender. See the “Email Authentication” chapter in 
the Cisco IronPort AsyncOS for Email Advanced 
Configuration Guide.

See the “Centralized Management” chapter in the 
Cisco IronPort AsyncOS for Email Advanced 
Configuration Guide.

For each domain, you can assign a maximum number 
of connections and recipients that will never be 
exceeded by the system in a given time period. This 
“good neighbor” table is defined through the 

destconfig 

command.

For more information, see the section on Controlling 
Email Delivery in “Configuring Routing and Delivery 
Features” the Cisco IronPort AsyncOS for Email 
Advanced Configuration Guide.

Verify the authenticity of bounce messages. See the 
section on IronPort Bounce Verification in the 
“Configuring Routing and Delivery Features” chapter 
of the Cisco IronPort AsyncOS for Email Advanced 
Configuration Guide.

See information on adding users in the “Common 
Administrative Tasks” chapter of the Cisco IronPort 
AsyncOS for Email Daily Management Guide.

See