Every now and then I need to use openssl on windows, and I always struggle finding a good set of prebuilt binaries. For a long time I have been fine with a very old version of openssl built back in 2008 – but recently I needed to use some newer features so I had to find a more recent build of OpenSSL.
After some googling I found these http://www.npcglib.org/~stathis/blog/precompiled-openssl/
They work wonders, and he builds a lot of flavors.
The command I wanted to use was
openssl s_client -connect {server.com}:443 -servername {domain.server.com}
Which can be used to view certificate chain used by a web server.