block user from sending emails

[feiticeir0]

Hi all !

I've been searching through zimbra options (and user options) and didn't find any thing -

Is it possible to block a user account from sending emails ? or, other words, is it possible to create an account just for receiving emails ?

This account is for several users (using the same username and password) to read, but i don't want them to be able to send emails using this account - The users are not created in the Zimbra server and i don't want to.

Thanks.

Bruno