In our company some of our employee's have multiple email addresses on multiple domains. Now we have tried multiple setup to manage this situation, only to find that there is no ideal one. We are using Exchange 2013 with Outlook 2013 clients.
One of the main problems is that if i receive an email on email@example.com, but my default smtp is firstname.lastname@example.org, outlook will set email@example.com as from address. I want it to select the to address as default reply address.
At first we gave the user an alias to the mailbox. This works well for receiving mail, but it's hard to reply with the given address. You'd manually have to select the 'From' address each time you need to send an email.
Then we tried to give the user a second mailbox, with send as and full control permissions. Still no joy. The only luck we had was to give the user a second mailbox on a second user with no send as or full control permissions. Only downside here is that there are 2 AD users needed since Exchange won't allow two mailboxes on the same user account. This situation however solves the replying issue when you add 2 exchange accounts to outlook / mobile, but our add-in licenses need extra user accounts.
Anyone has any suggestion on how to resolve this issue? Any suggestions on a better implementation? Can't believe Microsoft hasn't made up any solution for this 'old' problem.