Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

Go to Mail Policies > Outgoing Content Filters.

In the Filters section, click Add Filter.

In the Conditions section, click Add Condition.

Add a condition to filter the messages that you want to encrypt. For example, to encrypt sensitive 
material, you might add a condition that identifies messages containing particular words or phrases, such 
as “Confidential,” in the subject or body.

Click OK.

Optionally, click Add Action and select Add Header to insert an encryption header into the messages 
to specify an additional encryption setting.

In the Actions section, click Add Action.

Select Encrypt on Delivery from the Add Action list.

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.

After 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.

The Cisco Ironport Encryption appliance must be set up to handle flagged messages.