procmail with mutt

[Gerald Britton <gerald.britton@xxxxxxxxx>]

Can anyone tell me the right way to get procmail working with mutt?  I
have procmailrc set up like this:

$ cat /etc/procmailrc
# Use mbox-style mailbox in FHS standard directory
DEFAULT=/var/mail/$LOGNAME
LOGFILE=$HOME/procmail

I also have my userid set up as a directory under /var/mail/. 
However, when I send myself an E-mail, I get something like this:

$ ls /var/mail/me/
msg.7QdS  msg.ChmU  msg.MSbU  msg.V_WF  msg.amXT  msg.ikDB  msg.sXSF 
msg.sXbU  msg.uWtL  msg.wWtL  msg.x3cS

If I try to read this with mutt, like this

mutt -f /var/mail/me -m mbox

I get the message from mutt:

/var/mail/me/ is not a mailbox.

Does anyone know what's going on