Always use TNEF formatting in S/MIME messages
- Policy ID
- L_OutlookTNEFinSMIMEmessages
- Scope
- User Configuration
- Supported on
- At least Windows Server 2008 R2 or Windows 7
- Source
- Microsoft 365 Apps / Office Administrative Templates (version 5568.1000)
- Category
- Microsoft Outlook 2016 › Security › Cryptography
Description
This policy setting allows you to specify the formatting when sending S/MIME messages.
If you enable this policy setting, Outlook always uses TNEF formatting when sending S/MIME messages.
If you disable or do not configure this policy setting, Outlook uses the format specified by the user when sending e-mail messages, including when sending S/MIME messages.
Registry
UserHKEY_CURRENT_USER
- forcetnefREG_DWORD