Notification of new mail to client?

[Jim Archer]

--On Tuesday, January 06, 2004 9:49 AM -0500 Rob Siemborski 
<rjs3 at andrew.cmu.edu> wrote:

> Huh?  By default in IMAP, clients need to poll for new message
> notifications.
>
> Cyrus does support the IDLE extension, which will send new mail
> notifications as they arrive, but only if you have a client that uses it.

Hm, I guess I am misinformed then.  My mistake, thanks for the correction. 
Is the IDLE extension in Cyrus turned on by default, or is there something 
I have to do to activate it?  The client was Outlook Express 6.0.

Thanks,

Jim