Alternative SSL Option using STUNNEL (very lightweight and reliable)

Due to ISP requirements I was forced to start using SSL for downloading POP email on Exchange 2003. With the SBS POP3 Connector not supporting SSL (and only checking every 15 mins at a minimum) I looked for an inexpensive solution. PopGrabber looked really attractive but did not support SSL, though the ClamAV proxy looked interesting. I wanted to go even more lightweight, and found Stunnel. (So I'm now using POPGrabber+Stunnel as a lightweight and highly reliable alternative to the MS POP Connector for Exchange 2003.)

http://www.stunnel.org/ in its own words "allows you to encrypt arbitrary TCP connections inside SSL on both Unix and Windows". The program is under 100Kb and runs as a Windows service. The installer is well set up, with the service easy to install and start from Start-Programs menu icons. A basic config file is as follows (remove my comments):
- - - - -
client=YES
service=SSLEmailTunnel <-- service name (can be any text)

[SSLEmailTunnel] <-- the same service name as above
accept = 110 <-- listen on port #
connect = pop3.officemail.co.nz:995 <-- mail server name and port for the SSL connection
- - - - -

Multiple services can be defined (eg one for SSL POP3 download and one for SSL SMTP sending). I have used this product on another mail server for different reasons for 18 months with zero problems.
Download page: http://www.stunnel.org/download/binaries.html (I'm using version 4.20 at present)

Mike