What is the simplest way I can get a secure, authenticated SMTP server running on my Linux machine so my family can use it to send mail from hostile networks?
Currently I have exim bound to
127.1:25 so if I can send mail from my laptop using
ssh -L2525:localhost:25 wolever.net… But I'd like exim (or some other SMTP server) to bind to, eg,
0.0.0.0:2525 and accept authenticated SMTP connections.
What's the simplest way to do that?