How to use different domain in Exim

I have a problem with Exim that I am unable to solve. My domain is foo.com and I want to send mail as [EMAIL PROTECTED] I use the -f option to set the From: field. Everything seem ok but when I receive the test mail the From: field is [EMAIL PROTECTED] I have tried to change the qualify_domain

Which MTA?

Hi, I am looking into setting up email accounts for some of our assosciate companies as well as clients. They will just be using pop3 to retrive their email, no access to the server via telnet, ftp or whatever? I understand that there are a number of MTA, snedmail, smail, qmail etc. Which of