Outlook 2000 Sent items folder

Hello.

I configured an IMAP mail account using the Outlook 2000. I noticed that whenever I sent an email the mail message is not stored on the SENT ITEMS of the IMAP server but it is stored locally on the SENT ITEMS folder of the local Outlook 2000 personal folder.

Any ideas how I can I enable Outlook 2000 to store the mails I sent into the SENT ITEMS folder of the IMAP Server account?

Thank you in advance.