Newbie Question

I am trying to set up procmail to store all users email in $HOME/Mail/inbox
instead of /var/spool/mail on my linux box.

I have the following default .procmailrc file:

VERBOSE=off
PATH=/bin:/usr/bin:/usr/local/bin:
MAILDIR=$HOME/Mail
LOGFILE=$MAILDIR/procmail.log

##########
# MAIL BACKUP
##########

:0 c
backup

:0 ic
| cd backup && rm -f dummy `ls -t msg.* | sed -e 1,50d`

################
# DEFAULT ACTION
################

:0:
*^TO*
inbox

#EOF

Everything seems to store in the right mailbox but.. Eudora won't retrieve it.
What am I doing wrong??

TIA
Steve