The secnario:
A quiet but sturdy little Linux box sits between our LAN and the outside world. pppd, iptables, and a small collection of other network services are its tasks.
My ISP
requires POP3 & SMTP over SSL.
One of the PCs on the LAN uses an OS & e-mail client which is not capable of running encrypted SMTP/POP3 sessions.
I would like to configure the Linux box to act as an e-mail proxy for clients on the LAN. Local PCs would establish POP3/SMTP sessions with the Linux box, which would in turn establish the encrypted POP3/SMTP sessions with my ISP under the guise of one or more clients.
What do I need in order to accomplish this?
Setting up a POP3 daemon on the Linux box was trivial, and local PCs can connect to it (and retrieve mail from local accounts) without any difficulty.
I still have to track down a SMTP daemon to allow local PCs to send; it's on the to-do list.
What do I need however to perform the proxy actions? Is this a job for sendmail, postfix, or ...
I've been researching it for a short time, however separating the wheat from the chaff when pouring through search hits for the terms "e-mail", "proxy", "relay", etc. is a daunting task.
A shove in the right direction would be greatly appreciated, no matter how hard.
Set up of a e-mail proxy/relay
