The solution I am looking for is different than what exist in other similar questions. I want to have one exchange server that can handle two (or more domains) for example abc.com and xyz.comI have one AD, so users will have accounts in both domains- for example: user1@abc.com and user1@xyz.com I want, for compliance reasons, to have two different mailbox stores- one for each domain so that mails do not get intermixedI want the users to have in their outlook two different mailboxes- each with its own sent items, deleted items, drafts, etc... Can this be done? If yes- can you please point me to documentation on how to do this?

Hello Agree with Chris Exchange Org can be 1 per AD forest you need to multiple domains in your Exchange server and create a mailbox email policy to match with respective domains.Thanks Mouzzam Hussain Visit to my Blog mouzzamh.wordpress.com