I want to setup an outgoing only SMTP server on Debian, so my Web-applications will be able to send e-mails via it. I don't want to use another hosts because of security and customizability of my own setup.
I wish to install Postfix and configure it only in the outgoing mode (I don't want it to be a relay). So I want to ask an advice how to do it in the best way. There's no need in users, virtual users, endpoints and other options Postfix provides. I suppose I should only attach Postfix to some hostname, so my IP address can resolve to it.
I also think Postfix can be a bit complicated solution for this task. If you know much simpler tool for it, let me know.