Read EMail as plain text must be enforced.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17770	DTOO214 - Outlook	SV-33518r1_rule		Medium

Description
Outlook can display e-mail messages and other items in three formats: plain text, Rich Text Format (RTF), and HTML. By default, Outlook displays e-mail messages in whatever format they were received in.

STIG	Date
Microsoft Outlook 2010 STIG	2018-04-04

Details

Check Text ( C-34005r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Outlook Options -> Preferences -> E-mail Options “Read e-mail as plain text” must be set to “Enabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\14.0\outlook\options\mail Criteria: If the value ReadAsPlain is REG_DWORD = 1, this is not a finding.

Check Text ( C-34005r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Outlook Options -> Preferences -> E-mail Options “Read e-mail as plain text” must be set to “Enabled”.

Procedure: Use the Windows Registry Editor to navigate to the following key:

HKCU\Software\Policies\Microsoft\Office\14.0\outlook\options\mail

Criteria: If the value ReadAsPlain is REG_DWORD = 1, this is not a finding.

Fix Text (F-29693r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Outlook Options -> Preferences -> E-mail Options “Read e-mail as plain text” to “Enabled”.