Disable leave a copy in cyrus pop

[Ramprasad A Padmanabhan]

Hello all,

   Is there a way I can disable leave a copy on the server.  I have got some users who have kept a leave a copy on the server and now their mails are bouncing because of quota.

Seeing how pop works I assume that it is quiet difficult to disable "leave a copy", Is there a way I can atleast find out how many users have kept "leave a copy" on

Thanks
Ram