Exchange 2013 multiple organisations

Hi all,

Iaman environmentto buildMicrosoft Exchange2013.I willdescribe the situation:

Server1:Microsoft Exchange2013
-Client Access Role
-WitnessServer

Server2:Microsoft Exchange2013
-MailboxRole

Server3:Microsoft Exchange2013
-MailboxRole

These serversare configuredin aDatabase Availabilty Group.Thisall worksproperly: D

Severalorganizationswill usethisserver.A kind ofHosted Exchangesolution.Is itpossible to useExchange2013 with multiple organizations, and seperate these organisations fromeach other?

WhenIconnectOutlook andwant to senda newmail, I canseeaddresses ofother organizations.