Policy

Replies or forwards to signed/encrypted messages are signed/encrypted

This policy setting controls whether replies and forwards to signed/encrypted mail should also be signed/encrypted. If you enable this policy setting, signing/encryption will be turned on when replying/forwarding a signed or encrypted message, even if the user is not configured for SMIME. If you disable or do not configure this policy setting, signing/encryption is not enforced.

Policy
Pack Microsoft Office
Category Microsoft Outlook 2016 / Security / Cryptography
Policy ID 1ff22f55afbb
Internal name L_RepliesOrForwardsToSignedEncryptedMessagesAreSignedEncrypted

Registry

Copy registry mappings

HKCU\software\policies\microsoft\office\16.0\outlook\security\nocheckonsessionsecurity (enabled) = 1
HKCU\software\policies\microsoft\office\16.0\outlook\security\nocheckonsessionsecurity (disabled) = 0

Policy notes

This policy setting controls whether replies and forwards to signed/encrypted mail should also be signed/encrypted. If you enable this policy setting, signing/encryption will be turned on when replying/forwarding a signed or encrypted message, even if the user is not configured for SMIME. If you disable or do not configure this policy setting, signing/encryption is not enforced.

Related policies

Always use TNEF formatting in S/MIME messagesCheck for the user's private key when the user sends an encrypted email that includes the user as a recipientDo not check e-mail address against address of certificates being usedDo not display 'Publish to GAL' buttonDo not provide Continue option on Encryption warning dialog boxesEnable Cryptography IconsEnable Retrieval of Remote Certificate Authority Information