I have what I thought was a strange request by a client, which I have been researching.

Please, is it possible to restrict sending email (but not receiving) for a number of users during a time period for the day?
Zimbra version deployed is 7.1.1 GA, a multiserver setup (1 LDAP Master, 2 Zimbra Proxies/LDAP Replicas and 2 Mailstores.)

Eagerly searching for a solution, please advise!

Thanks in anticipation