Just wondering that if I can somehow keep the certain users' mail in queue rather than delivering quickly?
Due to the compliance issue, I have been asked to stop emails from certain users flowing outside of the system without letting them know before the investigation is over. So. I am looking for a way by which those users would feel that mail has been sent however I can keep those emails in queue and not to send out for certain days. May be not in zimbra but wondering if postfix can do the trick or is there any other way without suspending the account.