DTOO317 - Outlook - Replies or forwards to signed/encrypted messages must be signed/encrypted.

Information

This setting controls whether replies and forwards to signed/encrypted mail should also be signed/encrypted.

Solution

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Cyrptography 'Replies or forwards to signed/encrypted messages are signed/encrypted' to 'Enabled'.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Outlook_2010_V1R14_STIG.zip