Read EMail as plain text must be enforced.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-251863 | SRG-APP-000516 | DTOO214 | SV-251863r811196_rule | 2022-03-11 | 2 |
Description
Outlook can display email messages and other items in three formats: plain text, Rich Text Format (RTF), and HTML. By default, Outlook displays email messages in whatever format they were received.
ℹ️ Check
Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Outlook Options >> Preferences >> E-mail Options "Read e-mail as plain text" is set to "Enabled".
Procedure: Use the Windows Registry Editor to navigate to the following key:
HKCU\Software\Policies\Microsoft\Office\16.0\outlook\options\mail
Criteria: If the value ReadAsPlain is REG_DWORD = 1, this is not a finding.
✔️ Fix
Set the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Outlook Options >> Preferences >> E-mail Options "Read e-mail as plain text" to "Enabled".