I've been reading about mail servers and found a guide on how to do it at flurdy.com/docs/postfix/ (Sorry i cant post links) and i understand how to set up the server but what i dont really understand is how add email accounts or do something i need which is host emails for multiple domains. So i need "nathan at domainone.com" to have a separate email inbox from "nathan at domaintwo.com" and not the same. And also can Post fix server as the SMTP client because i didnt see that listed anywhere in the tutorial. can anyone point me in the direction i need for this?