How to keep sent mails in cyrus

[Oliver Demetz - Hardware-XPress.de]

Hi all!

Finally I've succeded installing cyrus imapd.
Now, I want to realize the following:

Normally, when sending a mail, a copy of that mail is kept locally on
my pc in Sent-Folder.
What I'd like to realize is, that a copy of that sent mail is stored
in a subfolder 'Sent' of my imap-mailbox on cyrus.

Is that possible?
My MTA is postfix.

So long
Olli