Keeping sent items in Outbox

[Kim]

I am using outlook 97, and have a main Email "mailbox" and a general support
mailbox that I monitor throughout the day.

When replying to a message sent to the support mailbox, my reply sits in the
Outbox rather than moving it to Sent items. the message is actually sent -
but with it remaining in the outbox, I can not be sure if it actually was
sent, or needs to be sent.

Is there a config. setting I need to change?

Has anyone heard of this issue?

Thanks in advance for any help offered.

Email to: enuf...@home.com