I am not expert in exchange and i need help from you in this case
we use exchange server and we got incident that one of outgoing messages get compromised .
whats your ideas to encrypt the outgoing from server side ?
any proper - post - guideline for setup the outgoing encryption ?
so i can refer it to the tech person as he is new and our expert just left before the incident
There are various types of encryption available, read this document and choose the one best suited for your scenario: https://docs.microsoft.com/en-us/office365/securitycompliance/email-encryption