IMAP folders

[Andy Cowan <chia transuranium homelinux net>]

Hi folks,

I'm running a redhat-9 box on my DSL and have it configured with IMAP to 
provide mail for myself and my roommates.  It appears that each IMAP 
folder consists of a text file in the user's home directory, aside from 
Inbox which is in /var/spool/mail.  I have three questions related to this:

1) Is there a way that I can make imapd put mail folders somewhere 
else?  Some clients (e.g. IMP) can't tell the difference between a mail 
folder and any other normal file; not to mention the clutter in my home 
directory.

2) Is it possible for me to create a user who has access to the system 
via ssh but for whom the machine won't accept mail?  How would I do this?

3) What if I want to create a user who gets mail, but can't login 
otherwise?  how would I do that?

Thanks,

Andy