Thunderbird, Postfix, and email???

[John N. Alegre]

Ok .. first let me confess not really knowing if I am asking this correctly.

Second, if there are other lists where this should be just let me know.

Here is what I want to do but I don't know if I need another PART?

I have SMTP configured to give incoming email to postfix. postfix then puts it 
into the correct folder for the user in /var/spool/mail.

I want to set up Thunderbird on another machine on the same LAN to retrieve 
email from those user mailboxes in /var/spool/mail.  I would like one user on 
the machine I want to read the mail on to open Thunderbird, retrieve mail 
from 3 different user accounts on the postfix / SMTP box and put it into 
various folders in Thunderbird.

Is this possible?

Thanks for the help
john