Two email addresses for in-/outbound use with one Exchange mailbox

Posted on 2014-04-01
Medium Priority
Last Modified: 2014-04-01
Hi, experts

We have a user who works for two divisions of the company and needs to receive and send emails from two email addresses - user@company1.com and user@company2.com

We are trying to accomplish it with 'the least administrative effort' as Microsoft would say in their tests.

What I have found so far:
1) Create two AD users, two mailboxes and grant User1 SEND AS rights for second mailbox.
2) Create a distribution group, place User2 in it and grant rights to User1 over User2 Distr Group

What I am attempting to try:
Create a Mail Contact user@cmopany2.com in Exchange
create a transport rule in Exchange to forward user@company2.com emails to user@company1.com (tested, works correctly),  
Grant SEND AS rights to user1 for Mail Contact user@company2.com

Oubound emails still generate the error "You can't send a message on behalf of this user unless you have permission to do so. "

Your help is greatly appreciated.

Thank you
Question by:learn_it
  • 3
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LVL 15

Expert Comment

ID: 39969312
I'd give "Full Access" to the mailbox, in addition to "Send As".

Then I added both accounts to Outlook 2010.

Author Comment

ID: 39969354
So, if I understand correctly, you still suggest that I need to create two Exchange mailboxes instead of 1 mailbox + 1 mail contact?

Thank you
LVL 15

Expert Comment

ID: 39969375
Do you want this person to be able to send and receive from both mailboxes - both alias'?  If so, you need to have 2 mailboxes, which means 2 AD accounts.

Author Comment

ID: 39969403
Yes, the user will need to send and received from both mailboxes.

I was also looking on CHOOSE FROM utility, but I cannot justify its cost for a single user application. We will proceed with 2 mailboxes and 2 AD users associated with them. User1 will have full permissions for both accounts in order to send/received messages without any restrictions.

Thank you
LVL 15

Accepted Solution

jrhelgeson earned 2000 total points
ID: 39969434
When you have both mailboxes set up within Outlook, they will be able to use the "Choose From" within outlook.

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