I have installed zimbra on RHEL5, I have created to domains on the mail server
1- internal domain mail only for internal usage (company.lan) fake domain
2- external domain mail imail.company.com (for public exchange) reall domain
the normal mode the internal should not be able to submit to the external doamin it should deliver mail reject.
lately i found that in the mail admin I can see the list of the queues of rejected mail in Mail Queuse., how can i make sure that the internal will not submit to external and the user can get immediate undelivered mail to his/her mail box