I know that if multiple domains are configured in Internet Addressing, a user can receive email addressed to sameuser@domain1.com and sameuser@domain2.com. I also know that the admin can set the outgoing domain at the user/PO/domain level.

For the outgoing address, can the user choose? Similar to the drop-down in Outlook to choose the From: account. It looks like the user has no control over this. My feeling is that a separate PO would have to be set up, so in effect there would have to be two different mailboxes, and the user would have to run the GW client with different startup parameters. And for WebAccess, would also require separate services.

I guess this question has been asked before but haven't found the definitive answer yet, thanks for any advice.