Руководство Пользователя для Cisco Cisco Email Security Appliance C170

Select whether to always encrypt messages that meet the condition or to only encrypt messages if the 
attempt to send it over a TLS connection fails.

Select the encryption profile to associate with the content filter.

The encryption profile specifies settings about the key server to use, levels of security, formatting 
of the message envelope, and other message settings. When you associate an encryption profile with 
the content filter, the content filter uses these stored settings to encrypt messages.

Enter a subject for the message.

Click OK.

After you add the encrypt action, click Submit.

Commit your changes.

Once you add the content filter, you need to add the filter to an outgoing mail policy. You may want to 
enable the content filter on the default policy, or you may choose to apply the filter to a specific mail 
policy, depending on your organization’s needs. For information about working with mail policies, see 

AsyncOS enables you to add encryption settings to a message by inserting an SMTP header into a 
message using either a content filter or a message filter. The encryption header can override the 
encryption settings defined in the associated encryption profile, and it can apply specified encryption 
features to messages.

To add an encryption header to a message by using a content filter, add the Add Header filter action to 
the content filter, and enter the encryption header and its value. For example, if you want a Registered 
Envelope to expire in 24 hours after you send it, type 

X-PostX-ExpirationDate

 as the header name 

and 

+24:00:00

 as the header value.