This policy setting controls whether Outlook requires labels on S/MIME signed messages.If you enable this policy setting, ...

This policy setting controls whether Outlook requires labels on S/MIME signed messages.If you enable this policy setting, labels must be attached to all Outlook S/MIME messages before they are sent. Users can attach labels to messages in the "Message Options" dialog box by clicking "Security Settings," ensuring that the "Add digital signature to this message" check box is selected, and selecting a label under "Security Label."If you disable all S/MIME signed messages are not required to have a label, and users cannot change this functionality.If you do not configure this policy setting, all S/MIME signed messages are not required to have a label, but users can change this functionality through the "Message Options" dialog box.

This policy setting controls whether Outlook is required to use FIPS-compliant algorithms when signing and encrypting messages. ... This policy setting controls whether Outlook is the default program for e-mail, contacts, and calendar services.If you enable ... This policy setting controls whether Outlook prompts users before executing a custom action. Custom actions add functionality ... This policy setting controls whether Outlook requires digital signatures on all outgoing e-mail messages.If you enable this ... This policy setting controls whether Outlook requires labels on S/MIME signed messages.If you enable this policy setting, ... This policy setting controls whether Outlook sends S/MIME receipt requests with S/MIME signed messages.If you enable this ... This policy setting controls whether Outlook sends signed messages as clear text signed messages.If you enable this policy ... This policy setting controls whether Outlook should ignore external references during shutdown.If you enable this policy ... This policy setting controls whether Outlook subscribes to the Common Feed List, which is made available to multiple RSS ...