Question : Other User's Folder in Outlook 2003

I have a user that is filling in for a position that is currently vacant and needs to be able to send email, read email etc from the previous incumbant's email account.  He's using Outlook 2003, he's been made a delegate of the account with full control but he wants to be able to see everything in the mailbox, not just the inbox.  I've assisted him in adding the mailbox to his profile but when he clicks on the '+' next to the added email account, he gets an error stating 'unable to expand mailbox' (or words to that effect).  Before I assisted with adding this mailbox to his account, his assistant had shown him that he could open the inbox using the 'File-Open-Other User's Folder' option.  First - could that cause interference with adding the account to his Outlook profile and if so - second, how can I disconnect or close the other user's folder option so that he can utilize the added email account?

Answer : Other User's Folder in Outlook 2003

Adding the Other Users folder should not effect opening an attached inbox to this users Outlook profile. If you want the user to have Full permissions you will need to do the following...
- Open ADCU (Active Directory)
- Find the user that you need access to their mailbox
- Double click the user to open properties
- Go to the Exchange Advance Tab
- Click Mailbox Rights button
- Add the user trying to open the mailbox from his Outlook profile
- Give the user full control over the mailbox
- Click Apply and OK

-If you want to add Send on Behalf or Send As do the following...
Send on Behalf
- Open the users properties of the mailbox you want to send on behalf of
- Click on Exchange General Tab
- Click the Delivery Options button
- Under Send on Behalf of, click Add button and add the user to this account

Send As
- Open ADUC
- Click View, Advance Features
- Find the account of the user you want to Send As
- Click the Security Tab
- Add the user and scroll down and select Send As
- Click Apply and OK

Now try expanding the mailbox from the Other users outlook profile. Should have no issues.
If you want to Send As make sure that you use the FROM: in the New email message window and type in the users name.

Hope this helps~!