If you no longer require access to a shared mailbox, please inform IT Technical Support to remove you from the access list of the mailbox. You can place a ticket for this request at https://helpdesk.muellerreports.com.
To remove the shared mailbox from your Outlook 2013 client, perform the following steps:
Instructions
1. In Outlook, click on File, and then click the Account Settings drop down, and select the Account Settings option.
2. In the Account Settings box, click the account you wish to remove, and hit the "Remove" button
3. Confirm that you wish to remove the account by clicking yes.
4. The account and associated data files on your computer will be removed.
You're all set!
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