Mailscanner mrtg mountpoint

[Kate Kleinschafer]

Hi all,
I am getting the following in my maillog:
Unable to find a mountpoint for /var/spool/MailScanner/incoming.  Please 
set MailScanner Work Directory in mailscanner-mrtg.conf to a valid 
mountpoint

I did some searching and tried changing the mailscanner-mrtg.conf to / 
but this didn't help

Currently my config file says:
MailScanner Work Directory = /var/spool/MailScanner/incoming
and
Spool Directory = /var/spool

my df shows mounts as
/
/boot
/dev/shm

Any ideas what i need to change?

Thanks
Kate