Hello,

What is a good MTA (e.g. Postfix or something else) setup for a home computer behind a NAT, or a laptop that connects to various different wifi networks?

I've read a lot of Postfix tutorials on how to set it up this way or that, but they are usually geared towards computers that are servers ie they

• have a static IP
• have a domain name
• are always connected to the same network

My requirements are, I guess:

• Ability to forward mail for "root" to another server of my choosing.
• No listening for incoming SMTP connections - outgoing only
• Ability to route outgoing mail via an external SMTP server with authentication (and perhaps encryption)

If not Postfix, I need an MTA which can queue up mails in case it temporarily has no internet connection.