We are sending purchase orders and sales invoices using the email system within Enterprise. We are not using the external gateway and we are not using any external mail software (setting in mail and conference settings).

Most of the time this works fine. However, occasionally it will just stop working.

We don't know it's stopped working until a supplier tells us they haven't received the purchase order when we chase them.

We then restart the service on the server and this seems to kick start the mail queue into action.

I have three questions:

1. Why does enterprise just suddenly stop sending emails?
2. Is there a way of receiving an alert as to when the Enterprise mail stops sending?
3. Any tips when setting up and using the email in Enterprise?