Trust EMail from senders in receiver's contact list must be enforced.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17807	DTOO223 - Outlook	SV-33522r1_rule	ECSC-1	Medium

Description
E-mail addresses in users' Contacts list are treated as safe senders for purposes of filtering junk e-mail. If this configuration is changed, e-mail from users' Contacts might be misclassified as junk and cause important information to be lost.

STIG	Date
Microsoft Outlook 2010	2015-09-17

Details

Check Text ( C-34009r1_chk )
The policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Outlook Options -> Preferences -> Junk E-mail “Trust E-mail from Contacts” 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 JunkMailTrustContacts is REG_DWORD = 1, this is not a finding.

Check Text ( C-34009r1_chk )

The policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Outlook Options -> Preferences -> Junk E-mail “Trust E-mail from Contacts” 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 JunkMailTrustContacts is REG_DWORD = 1, this is not a finding.

Fix Text (F-29697r1_fix)
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Outlook Options -> Preferences -> Junk E-mail “Trust E-mail from Contacts” to “Enabled”.