Custom mail server setup with default accounts

You will have to setup a linux mail server for one single domain. For this you can use qmail or cyrus or any other solution but we want to have virtual accounts, when we add a new email account we should not have to add a new linux user. The domain is hosted for the moment on a different server and it is functional so there will be no DNS change until you are fully ready with the setup. After the setup is ready you need to add 10 000 email accounts as follows: projectX at (domain) where X will be from 1 to 10000, like project1 at (domain), project2 at (domain) and so on, for this you can make a one time script that will create the accounts when you run it. Regarding the accounts passwords you will get instructions after you start the work on this project. We also need a quick way to add a new email account, so you will have to make a script add_email_account and we should be able to add new email accounts by running: ./add_email_account $username $password The server is running Linux Cent OS 4 and you will get full root access on the server while you are working on it. SMTP sending should required SMTP authentication but no secure authentication is needed. So what is required again: 1) mail server setup for one .com domain 2) 10K projectX email accounts added by default 3) add_email_account script