Hello

I've searched around a bit and was unable to find anything similar, though perhaps i'm just using the wrong terminology.
We've fairly recently started using Zimbra in our environment here and i'm looking for some specific features.

We have a reasonably large group of users i want to take away the ability to send mail to anyone but their supervisors.

Also i need to remove their ability to recieve mail from anyone eccept their supervisors.

I have set up Transport Rules ont he hub transport server in exchange 2007 and was hoping that Zimbra had similar funtionality.

I'll set an example and hopefully someone can help.

I have a good amount of experience on Exchange 2007 and 2010.
Limited exposure to linux.

We're using Zimbra Version: 8.0.1_GA_5438.FOSS
Split Domain is set up with Exchange 2007 rules still get processed on the exchange. I know the processing will only happen if the mail is sent to the exchange.

I'm looking to set up similar rules on our zimbra server.

Example.

Members of the group of users InternalRestrictedSending@mydomain1.com (distribution list) may not Recieve mail from Internal Users except members of Restrictedrecievingallowedsenders@mydomain1.com (distribution list)

Members of the group of users InternalRestrictedSending@mydomain1.com (distribution list) may not sent mail to the outside world.

Members of the group of users InternalRestrictedSending@mydomain1.com (distribution list) may not sent mail to InternalRestrictedRecieving@mydomain1.com (distribution list)



From what i can gather i'll probably need to create lists for postfix to do the work with.
Also read something about function called Milter.
and heard about transport table but i don't know if it's relevant.

Really not sure where to go next. . . please help.