postfix + mutt questions

["Mihalis I. Tsoukalos" <mtsouk@freemail.gr>]

Dear list,

I have a .alias file in my home directory with entries having the
following form:

debian          debian-user@lists.debian.org
debian-kde      debian-kde@lists.debian.org

I want to use it with mutt so I have added the following line in
.muttrc:
set alias_file="~/.alias"

What else do I have to do in order to use it?


Second problem:
The emails to root go to user nobody.
I am using postfix and /etc/aliases has no such entry.
How can I fix it?


TIA,
Mihalis.

-- 
Unix is very simple, but it takes a genius to understand the simplicity.
(Dennis Ritchie)