Thank you Mike for sharing the update!
Actually i was trying to install 5.20 on Mac OS using the executable provided by you on website but i am getting the below error while installing. It is giving me error for missing configuration file and when i investigated at the path(/etc/stunnel/stunnel.conf), there was no stunnel folder only.

Also please let me know if i need to install openSSL before installing this executable. Thank you.

Installation Logs-->
MobileLab:Downloads sahnilsurana$ ./stunnel-5.20b8-osx 

[ ] Cron started

[ ] Clients allowed=500

[.] stunnel 5.20 on x86_64-apple-darwin14.3.0 platform

[.] Compiled with OpenSSL 0.9.8zd 8 Jan 2015

[.] Running  with OpenSSL 0.9.8za 5 Jun 2014

[.] Update OpenSSL shared libraries or rebuild stunnel

[.] Threading:PTHREAD Sockets:SELECT,IPv6 TLS:ENGINE,OCSP

[ ] errno: (*__error())

[.] Reading configuration from file /etc/stunnel/stunnel.conf

[!] Cannot open configuration file

[.]  

[.] Syntax:

[.] stunnel [<filename>] ] -fd <n> | -help | -version | -sockets

[.]     <filename>  - use specified config file

[.]     -fd <n>     - read the config file from a file descriptor

[.]     -help       - get config file help

[.]     -version    - display version and defaults

[.]     -sockets    - display default socket options


Regards,
Saurabh Beriwal

On Thu, Jul 9, 2015 at 7:31 AM, Michal Trojnara <Michal.Trojnara@mirt.net> wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Dear Users,

I have released version 5.20 of stunnel.

The ChangeLog entry:

Version 5.20, 2015.07.09, urgency: HIGH
* Security bugfixes
  - OpenSSL DLLs updated to version 1.0.2d.
    https://www.openssl.org/news/secadv_20150709.txt
* New features
  - poll(2) re-enabled on MacOS X 10.5 and later.
  - Xcode SDK is automatically used on MacOS X if no other
    locally installed OpenSSL directory is found.
  - The SSL library detection algorithm was made a bit smarter.
  - Warnings about insecure authentication were modified to
    include the name of the affected service section.
  - A warning was added to stunnel.init if no pid file was
    specified in the configuration file (thx to Peter Pentchev).
  - Optional debugging symbols are included in the Win32 installer.
  - Documentation updates (closes Debian bug #781669).
* Bugfixes
  - Signal pipe reinitialization added to prevent turning the
    main accepting thread into a busy wait loop when an external
    condition breaks the signal pipe.  This bug was found to
    surface on Win32, but other platforms may also be affected.
  - Fixed removing the disabled taskbar icon.
  - Generated temporary DH parameters are used for configuration
    reload instead of the static defaults.
  - LSB compatibility fixes added to the stunnel.init script (thx
    to Peter Pentchev).
  - Fixed the manual page headers (thx to Gleydson Soares).

Home page: https://www.stunnel.org/
Download:  https://www.stunnel.org/downloads.html

SHA-256 hashes:
4a36a3729a7287d9d82c4b38bf72c4d3496346cb969b86129c5deac22b20292b
stunnel-5.20.tar.gz
9d9d38241e972713cd0937e2cf66fdacf3adcb357fbea82d8e46648de4e26fa4
stunnel-5.20-installer.exe
cfc1e94cb7c7bf14c832ac8799db4a3438ae7542aa04ec5e9c6695a1a3c3843d
stunnel-5.20-android.zip

Best regards,
    Mike
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