cucipop 1.21 wont remove mail

[duncan <duncan fim com au>]

I am running a redhat 4.2 server for email using cucipop 1.21.

Everyone is using netscape 3 or 4 mail. The problem is that even though
netscapes mail is set to remove message after download the mail still
leaves a copy on the server.

This is bugging me as I have to go and clean out everyones mail to stop
it reappearing again and again.

Any thoughts?

Dunc