Stunnel is a free SSL proxy server that provides SSL services to Windows programs. Stunnel is easy to install, very robust, and functions transparently with very little overhead.
Stunnel is required by SEE application programs when connecting to an email server that requires SSL services such as Gmail, Hotmail, and Yahoo.
If you are using SEE version 7.0 (or above), once downloaded & unzipped, Stunnel can be configured and controlled automatically without any user intervention.
With the "auto configuration" method of using Stunnel, all that is required is that you download & unzip Stunnel into a local directory.
Stunnel (WIN32) may be downloaded from
https://www.stunnel.org/downloads.html
or from
https://www.marshallsoft.com/stunnel-5.42-win32.zip
or from
ftp://ftp.drivehq.com/MarshallSoft/PublicFolder/stunnel-5.42-win32.zip
Stunnel (WIN64) may be downloaded from
https://www.stunnel.org/downloads.html
or from
https://www.marshallsoft.com/stunnel-5.56-win64.zip
or from
ftp://ftp.drivehq.com/MarshallSoft/PublicFolder/stunnel-5.56-win64.zip
The 32-bit version of Stunnel can be used with both 32-bit and 64-bit applications running on 64-bit computers.
After downloading Stunnel from www.stunnel.org or from our web site, unzip the file (stunnel.zip) into your SSL directory. The recommended directory is \SEE4C\SSL (C/C++), \SEE4D\SSL (Delphi), \SEE4VB\SSL (Visual basic), etc.
Next, the Stunnel installation program must be run, which will download the required Stunnel files from www.stunnel.org as well as create a new stunnel.pem certificate file.
You are now ready to run SEE programs that connect to email servers that require SSL. SEE will configure, load, and unload Stunnel automatically. See the MailSSL and ReadSSL example programs.