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.


I believe Perdition should do the trick, though it may not qualify as “simple”.

This blog post shows how to set up the SSL.


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.

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