Select IMAP as the Server Type, then click Next >:
Enter your full name in the Your Name field, and your full E-Mail address in both the E-Mail Address and User Name fields. Enter your password in the Password box. Use imap.yourdomain.com as the Incoming mail server and smtp.yourdomain.com as the Outgoing mail server. Do NOT check the SPA box. When finished, click the More Settings button.
On this page, change the account name to your E-mail address. You may also optionally enter an Organization name.
On the Outgoing Server tab, check the box for My outgoing server (SMTP) requires authentication. You can now click Okay, and finish the account setup.
Your account is now set up and ready to go! You will likely want to remove the existing shortcuts from the Favorite Folders list (right-click them and select Remove from Favorite Folders to do so), and add shortcuts to your IMAP folders (select a folder, i.e. your IMAP Inbox, and drag it into the Favorite Folders section to do so). To enable storing your Sent mail on the server, please see Microsoft Knowledge Base Article #198854.
Old Mail Tip:
If you were using Outlook with POP3 previously, all of your old mail is still in Outlook Today/Inbox. It is recommended that you move this into your IMAP Inbox to have all of your mail in one place, and so that it's stored in a safe place. To do this, simply go into Inbox under Outlook Today, select all your mail, and drag it into the Inbox for the account you just configured. You should also move any old folders from the Outlook Today section into your IMAP account.
