Cannot send out settled the Time Delay delivery

Hi All,

My outlook client has 2003 and running a "Cached Exchange Mode", the status
is when I settled a delay time delivery in the delivery option of an email;
the email has holding in Outbox but cannot send out when arrived the time.
But when I disabled the cached mode return to the real-time connected with
server, the email will be sent out at once. I tested again the delay delivery
email will be holding the outbox when is cached mode; reverse the email not
in the outbox. I had clicked the "Send/Recive" to sync already but also the
status.