but it does what I needed get done ...
postfix
# grep mailbox /etc/postfix/main.cf mailbox_command = /usr/bin/procmail -a "$EXTENSION" DEFAULT=$HOME/Maildir/ MAILDIR=$HOME/Maildir home_mailbox = Maildir/ mailbox_size_limit = 0
procmail system-wide config
# cat /etc/procmailrc ORGMAIL=${HOME}/Maildir/ DEFAULT=${ORGMAIL}
procmail user config
I am using just ~/.procmailrc
and not ~/.forward for each system user
procmail postfix debian