Hello,

I would like to know if it's possible to set a restriction to certain domains and email addresses, that would block all outgoing email, except for mailboxes@domain.com, all mailboxes at domain.com would be able to communicate with each other.. but not to other outside the domain, that's the idea.

I'm using CENTOS 5.2 i686 + cPanel running Exim mail servers.

Any ideas?