Secure POP3/SMTP proxy?

Question

An ISP doesn't offer secure/encrypted POP3/SMTP connections to its email servers. (I could forward the mail to another mail service that does, but I'd like to try a proxy)

Is there some simple software that could be run on a linux box to allow secure SSL POP3/SMTP connections to it, and transparently proxy/connect to the ISP email servers?

This is to allow wireless mobile devices more secure access their email without needing the full vpn.

Answer 1

You can certainly setup stunnel to proxy POP/SMTP. The connection will be encrypted between the client and the host running stunnel, but it will still be un-encrypted between the stunnel host and the ISP. It certainly cannot be setup transparently though. Your clients must be configured to use SSL.

• How to set up a secure POP3 (pop3s) server, using stunnel