Multiple Domains and Companies using one Exchange Server
Posted on 2008-10-08
Hello everyone :)
We use Exchange 2003 running on Windows Server 2003 Standard.
We have one network domain but use two different email domains ('@example1.com' and '@example2.com') because we have two different trading names.
Presently, any user can use the address book and see every other user address. This has not really been an issue until now.
The Managing Director has recently setup another, but totally independent, Company. As a result, we would like to create mailbox accounts, using our current infrastructure, and ensure that users of this new Company have their own Global Address Book whilst not seeing user accounts from the other Companies.
Typically, I create an OU for every Company and place users into the correct one. This allows me to control which Company gets what group policy.
Obviously all these users are still logging into the one domain. I'm not sure if creating individual domains is the correct or easiest option? And am not sure how one Exchange server copes with more than one domain.
I also realise that any user logging into Webmail will need to use 'DOMAIN\User Name'. I've automated that process so the user doesn't need to type the domain in.
I've used Hosted Email Solutions before and within seconds you can have an account setup which looks and feels like your own server and domain. Their webmail or Outlook (RPC over HTTPS) never reveals any other user accounts via the address book even though their server handles multiple users using multiple Companies and Domains.
I'd really like to know how they go about doing this so that we can utilise our equipment for our different Companies.
Thanks for reading and I hope someone can assist :)