Hi, Im trying to get a minor smtp server up and running, the firewall will only allow access from 2 ip's, since it's only task is to send out newsletters. The issue is all guides i have tryed so fare, is not allowing me to do so. The server is called relay.domain.com The site i called anothersitedomain.com The issue is how to get this setup working, so that anothersitedomain.com accesses the relay.domain.com SMTP and sends out emails, and how about dns configuration? to avoide ending up in spam? Hope there is someone that can help out here - the smtp is going to run on a vps, so i can more or less choise what OS is needed, and not locked to specific os.