Question

Your organization uses Microsoft Purview Message Encryption. The legal team frequently sends encrypted emails containing settlement details to external recipients at partner law firms. After a recent dispute, the legal team asks you to enable two capabilities: the ability to revoke access to an already-sent encrypted email, and the ability to set an expiration date so external recipients can no longer open the message after 30 days. Which solution meets both requirements?

Accepted Answer

Configure Purview Advanced Message Encryption with a custom branding template that includes revocation and expiration settings

Answer

Apply a sensitivity label with encryption and the Do Not Forward option to outgoing legal emails

Answer

Create a mail flow rule that applies the Encrypt-Only protection template to all external legal mail

Answer

Enable Rights Management and publish an auto-labeling policy that encrypts messages to external domains