Cisco Cisco Email Security Appliance C680 User Guide

AES. AES provides stronger encryption but also takes longer to decrypt, 
introducing delays for recipients. AES is typically used in government 
and banking applications.

Enable or disable the decryption applet. Enabling this option causes the message 
attachment to be opened in the browser environment. Disabling this option causes 
message attachments to be decrypted at the key server. If you disable this option, 
messages may take longer to open, but are not dependent on the browser 
environment.

In the Message Settings section, enable or disable Secure Reply All.

Enable or disable Secure Message Forwarding.

Select an HTML notification template. Choose from HTML notifications you 
configured in text resources. If you did not configure a template, the system uses 
the default template.

The key server uses an HTML or text notification based on the recipient’s 
email application. You must configure notifications for both.

Select a text notification template. Choose from text notifications you configured 
in text resources. If you did not configure a template, the system uses the default 
template.

Enter a subject header for encryption failure notifications. The appliance sends a 
notification if the encryption process times out.

Select an encryption failure notification template for the message body. Choose 
from an encryption failure notification template you configured in text resources. 
If you did not configure a template, the system uses the default template.

Submit and commit your changes.

If you use Cisco Registered Envelope Service, you must take the additional step 
of provisioning your appliance. Provisioning the appliance registers the 
encryption profile with the hosted key service. To provision the appliance, click 
the Provision button for the encryption profile you want to register.