In the Folders List, right-click Folders - your name.
In the pop-up menu, select Properties for Folders - your name.
In the Mail Folder Properties window, click the Advanced button.
In the Sun Java System Connector for Microsoft Outlook properties dialog, select the Mail tab.
Within this tab, you can change the properties for incoming mail (IMAP) and outgoing mail (SMTP):
Synchronize Mail folders every x minutes — the interval after which a server mailbox may be polled for any recently-arrived messages. If any new messages arrive, the mailbox is refreshed and redisplayed. This value defaults to 5 minutes. A minimum frequency of 1 minute is enforced. If this field is cleared or set to zero, no polling will be performed for this server connection.
Download messages — If this option is enabled all messages in folders that have been selected for offline use are downloaded into the local cache when working in offline mode. See Working Offline for instructions on how to work offline. See Selecting a Folder for Offline Use for instructions on how to select a folder for offline use. By default your Inbox is downloaded.
Do not download messages if they are larger than X KB — If this option is enabled, only messages that are smaller than the value entered into the field are downloaded into the local cache when working in offline mode. This field is primarily intended to reduce download times when going into offline mode.
Server requires Authentication — if this checkbox is enabled, SMTP authentication is required for sending mail.
Use Alternate Account — if this checkbox is enabled, the SMTP server uses the provided User Name and User Password for SMTP AUTH authentication. If the checkbox is not enabled, it is defaulted to Sender's email Address.
Send BCC to sender’s E-mail address — if this checkbox is enabled, any email that is sent will have the email address in the BCC. This effectively provides a way for senders to file a copy of all messages they send. The messages are filed within a sender's server INBOX, and will be subsequently affected by any server-based message filtering rules.
When you are finished making changes, click OK.