exim project

hello everyone ,, i have a server, OS CentOS 5 final, WHM, Exim, now i want someone, who will configure exim, to make it send about 400 message every 15 minute, a message with too many reciepints, so its almost one message which should be delivered to say 200,000 emails, but i dont want to send them all in one time, instead 400 reciepients every 15 minute, with loosing any messages & also learn me the parameters which will use to use it again if i moved to another server