Always use TNEF formatting in S/MIME messages

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.

Supported on: At least Windows 7
Registry HiveHKEY_CURRENT_USER
Registry Pathsoftware\policies\microsoft\office\15.0\outlook\security
Value Nameforcetnef
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

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