Unable to open mail spool file /var/mail/root

['chris']

hi

I'm using thunderbird and MOVEMAIL accounts for every local user.

MOVEMAIL settings:

Account Settings:
Account Name = user@localhost
Email Address & Reply to = user@localhost

Server settings:
Server Type = Movemail
Server name = localhost
User name = user

Outgoing server settings:
Server name = localhost
Use secure Connection = no

every user should login with his account, open thunderbird and see his mails,
but everyone gets this error message:

Unable to open mail spool file /var/mail/root

why thunderbird looks each time for root mails ?
knows someone what's wrong and howto solve this problem ?

# cat /etc/aliases
# /etc/aliases
mailer-daemon: postmaster
postmaster: root
nobody: root
hostmaster: root
usenet: root
news: root
webmaster: root
www: root
ftp: root
abuse: root
noc: root
security: root