help on exim configuration

[Paulo Lopes <pmml@netvita.pt>]

Hi,

My laptop is almost all day connected to the internet, however i work in 
diferent places so i'm on the move most of the time. I'd like to install 
and configure exim to send and receive the local users e-mail. I've 
tryed to do it but last night i let the laptop on and in the morning i 
found out that it has been used to relay spam-mail.

Can someone show me a simple configuration for exim that enables local 
users to read mail and only relay mail for local users. I need to relay 
because since i'm not always in the same network i don't want to 
configure the mail cliente everytime i change my work place. Is this 
possible?

Thanks,
Paulo Lopes