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 Hive | HKEY_CURRENT_USER |
Registry Path | software\policies\microsoft\office\15.0\outlook\security |
Value Name | forcetnef |
Value Type | REG_DWORD |
Enabled Value | 1 |
Disabled Value | 0 |