Message formats must be set to use SMime.

From Microsoft Outlook 2010

Part of DTOO260 - SMime message formats

SV-33563r1_rule Message formats must be set to use SMime.

Vulnerability discussion

E-mail typically travels over open networks and is passed from server to server. Messages are therefore vulnerable to interception, and attackers might read or alter their contents. It is therefore important to have a mechanism for signing messages and providing end-to-end encryption.Outlook supports three formats for encrypting and signing messages: S/MIME, Exchange, and Fortezza. By default, Outlook only uses S/MIME to encrypt and sign messages. If your organization has policies that mandate the use of specific encryption formats, allowing users to choose freely between these formats could cause them to violate such policies.

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Fix text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Cryptography “Message Formats” to “Enabled (S\MIME)”.

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